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Influenza Surveillance 2012-2013

Ronan Kelly

Ronan Kelly

Retired 2020
2011-2012 season thread here; http://www.flutrackers.com/forum/showthread.php?t=174927

Influenza Surveillance in Ireland – Weekly Report
Influenza Week 40 2012 (1st – 7th October 2012)

Summary
• This is the first influenza surveillance report of the 2012/2013 influenza season.
• All indicators of influenza activity in Ireland were at low levels during week 40 2012:
o The sentinel GP influenza‐like illness (ILI) consultation rate was 7.3 per 100,000 population in week 40 2012, unchanged from the updated rate of 6.6 per 100,000 reported during week 39 2012.
�� ILI rates remain below the Irish baseline threshold (25.9 per 100,000 population)
�� ILI rates remain at low levels in all age groups
• The proportion of influenza–related calls to GP Out‐of‐Hours services were at low levels for week 40 2012.
• No influenza positive specimens were reported from the NVRL from sentinel or non‐sentinel sources for week 40 2012.
• There were two respiratory syncytial virus positive specimens from the NVRL from non‐sentinel sources during week 40 2012. No positive specimens of adenovirus, parainfluenza viruses and human metapneumovirus were reported by the NVRL during week 40 2012.
• During week 40 2012, no confirmed influenza cases were hospitalised or admitted to ICU. There were no reports of any influenza‐associated deaths occurring during this period.
• No outbreaks of influenza/ILI were reported during week 40 2012.
• In Europe, low influenza activity was reported throughout the summer period. There is no evidence as yet that influenza transmission for the 2012/2013 season has started in Europe.

http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13715,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 41 2012 (8th ? 14th October 2012)

Summary
?All indicators of influenza activity in Ireland were at low levels during week 41 2012:
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 4.4 per 100,000 population in week 41 2012, a slight decrease from the updated rate of 6.8 per 100,000 reported during week 40 2012.
􀂊ILI rates remain below the Irish baseline threshold (21.0 per 100,000 population)*
􀂊ILI rates remain at low levels in all age groups
?No influenza positive specimens were reported from the NVRL from sentinel or non‐sentinel sources for week 41 2012 or for the 2012/2013 season to date.
?There were two respiratory syncytial virus (RSV), one parainfluenza virus type 3 (PIV‐3) and one human metapneumovirus (hMPV) positive specimens reported from the NVRL from non‐sentinel sources during week 41 2012.
?During week 41 2012, no confirmed influenza cases were hospitalised or admitted to ICU. There were no reports of any influenza‐associated deaths occurring during this period.
?No outbreaks of influenza/ILI were reported during week 41 2012.
?There is no evidence of significant influenza activity in Europe at present.
...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13724,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 42 2012 (15th ? 21st October 2012)

Summary
?All indicators of influenza activity in Ireland were at low levels during week 42 2012:
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 8.7 per 100,000 population in week 42 2012, a slight increase from the updated rate of 4.3 per 100,000 reported during week 41 2012.
􀂊ILI rates remain below the Irish baseline threshold (21.0 per 100,000 population)*
􀂊ILI rates remain at low levels in all age groups
?The proportion of influenza?related calls to GP Out‐of‐Hours services remained at low levels during week 42 2012.
?The first influenza positive specimen of the 2012/2013 season was reported from the NVRL during week 42 2012, an influenza B positive specimen from sentinel GP sources.
?There were six respiratory syncytial virus (RSV), one parainfluenza virus type 2 (PIV‐2) and one PIV‐3 positive specimens reported from the NVRL from non‐sentinel sources during week 42 2012.
?During week 42 2012, no confirmed influenza cases were hospitalised or admitted to ICU. There were no reports of any influenza‐associated deaths occurring during this period.
?No outbreaks of influenza/ILI were reported during week 42 2012.
?During the second week of the 2012/2013 influenza surveillance season, there was no evidence of significant influenza activity in Europe.
...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13742,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 43 2012 (22nd ? 28th October 2012)
Summary
?All indicators of influenza activity in Ireland were at low levels during week 43 2012:
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 8.5 per 100,000 population in week 43 2012, remaining unchanged from the updated rate of 8.0 per 100,000 reported during week 42 2012.
􀂊ILI rates remain below the Irish baseline threshold (21.0 per 100,000 population)*
􀂊ILI rates remain at low levels in all age groups
?The proportion of influenza?related calls to GP Out‐of‐Hours services remained at low levels during week 43 2012.
?No influenza positive specimens were reported from the NVRL from sentinel or non‐sentinel sources for week 43 2012. To date this season, only one confirmed influenza specimen was reported from the NVRL, an influenza B specimen from sentinel GP sources.
?There were three respiratory syncytial virus (RSV), one human metapneumovirus and one adenovirus positive specimens reported from the NVRL from sentinel and non‐sentinel sources during week 43 2012.
?During week 43 2012, no confirmed influenza cases were hospitalised or admitted to ICU. There were no reports of any influenza‐associated deaths occurring during this period.
?One acute respiratory disease outbreak was reported from HSE‐S during week 43 2012.
?Many countries of the Northern Hemisphere temperate region are reporting increasing sporadic detections of influenza viruses but numbers are still low and none have crossed their seasonal threshold.
...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13767,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 44 2012 (29th October ? 4th November 2012)
Summary
?All indicators of influenza activity in Ireland were at low levels during week 44 2012:
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 4.2 per 100,000 population in week 44 2012, a slight decrease from the updated rate of 6.9 per 100,000 reported during week 43 2012.
􀂊ILI rates remain below the Irish baseline threshold (21.0 per 100,000 population)*
􀂊ILI rates remain at low levels in all age groups
?The proportion of influenza?related calls to GP Out‐of‐Hours services remained at low levels during week 44 2012.
?No influenza positive specimens were reported from the NVRL from sentinel or non‐sentinel sources for week 44 2012. To date this season, only one confirmed influenza specimen was reported from the NVRL, an influenza B specimen from sentinel GP sources.
?The proportion of respiratory syncytial virus (RSV) positive specimens increased during week 44 2012, however remained within expected levels for the time of year.
?One adenovirus and one parainfluenza virus type‐3 positive specimens were reported from the NVRL from non‐sentinel sources during week 44 2012.
?During week 44 2012, no confirmed influenza cases were hospitalised or admitted to ICU. There were no reports of any influenza‐associated deaths occurring during this period.
?No influenza/influenza‐like illness outbreaks were reported to HPSC during week 44 2012.
?During the fourth week of the influenza season, there was no evidence of sustained influenza transmission
...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13775,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 45 2012 (5th ? 11th November 2012)

Summary
?All indicators of influenza activity in Ireland were at low levels during week 45 2012:
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 4.0 per 100,000 population in week 45 2012, remaining unchanged from the updated rate of 4.1 per 100,000 reported during week 44 2012.
􀂊ILI rates remain below the Irish baseline threshold (21.0 per 100,000 population)*
􀂊ILI rates remain at low levels in all age groups
?The proportion of influenza?related calls to GP Out‐of‐Hours services remained at low levels during week 45 2012.
?No influenza positive specimens were reported from the NVRL from sentinel or non‐sentinel sources for week 45 2012. To date this season, only one confirmed influenza specimen was reported from the NVRL, an influenza B specimen from sentinel GP sources.
?The proportion of respiratory syncytial virus (RSV) positive specimens increased during weeks 44 and 45 2012, compared to the previous week.
?One adenovirus, two parainfluenza virus type‐3 and three human metapneumovirus positive specimens were reported from the NVRL from non‐sentinel sources during week 45 2012.
?During week 45 2012, no confirmed influenza cases were hospitalised or admitted to ICU. There were no reports of any influenza‐associated deaths occurring during this period.
?No influenza/influenza‐like illness outbreaks were reported to HPSC during week 45 2012.
?Many countries of the Northern Hemisphere temperate region reported increasing detections of influenza viruses, particularly in North America and Western Europe, however none have crossed ILI threshold levels.
...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13786,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 46 2012 (12th ? 18th November 2012)
Summary
?All indicators of influenza activity in Ireland were at low levels during week 46 2012:
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 3.3 per 100,000 population in week 46 2012, remaining unchanged from the updated rate of 4.1 per 100,000 reported during week 45 2012.
􀂊ILI rates remain below the Irish baseline threshold (21.0 per 100,000 population)*
􀂊ILI rates remain at low levels in all age groups
?The proportion of influenza?related calls to GP Out‐of‐Hours services remained at low levels during week 46 2012.
?One influenza positive specimen (influenza A(H3)) was reported from the NVRL from non‐sentinel sources for week 46 2012.
?Respiratory syncytial virus (RSV) positivity levels continued to increase during week 46 2012, as expected for this time of year.
?Two adenovirus and one human metapneumovirus positive specimens were reported from the NVRL from non‐sentinel sources during week 46 2012.
?During week 46 2012, one confirmed influenza case was hospitalised. There were no reports of confirmed influenza cases admitted to ICU or of any influenza‐associated deaths occurring during this period.
?No influenza/ILI outbreaks were reported to HPSC during week 46 2012.
?Significant influenza transmission has yet to begin this season in Europe. Some European countries are reporting rising ILI rates that are likely due to other respiratory viruses.
...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13792,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 47 2012 (19th ? 25th November 2012)
Summary
?All indicators of influenza activity in Ireland were at low levels during week 47 2012:
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 8.6 per 100,000 population in week 47 2012, a slight increase compared to the updated rate of 4.2 per 100,000 reported during week 46 2012.
􀂊ILI rates remain below the Irish baseline threshold (21.0 per 100,000 population)*
􀂊ILI rates remain at low levels in all age groups
?The proportion of influenza?related calls to GP Out‐of‐Hours services remained at low levels during week 47 2012.
?One influenza positive specimen (influenza B) was reported from the NVRL from sentinel sources for week 47 2012. No influenza positive specimens were reported from the NVRL from non‐sentinel sources for week 47 2012.
?Respiratory syncytial virus (RSV) positivity levels continued to increase during week 47 2012, as expected for this time of year.
?One adenovirus, two parainfluenza viruses and one human metapneumovirus positive specimens were reported from the NVRL from non‐sentinel sources during week 47 2012.
?During week 47 2012, no confirmed influenza cases were hospitalised or admitted to ICU. There were no reports of any influenza‐associated deaths occurring during this period.
?No influenza/ILI outbreaks were reported to HPSC during week 47 2012.
?There is currently little evidence of sustained influenza virus transmission in Europe.
...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13802,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 48 2012 (26th November ? 2nd December 2012)

Summary
?All indicators of influenza activity in Ireland were at low levels during week 48 2012:
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 6.6 per 100,000 population in week 48 2012, a slight decrease compared to the updated rate of 7.8 per 100,000 reported during week 47 2012.
􀂊ILI rates remain below the Irish baseline threshold (21.0 per 100,000 population)*
􀂊ILI rates remain at low levels in all age groups
?The proportion of influenza?related calls to GP Out‐of‐Hours services remained at low levels during week 48 2012.
?One influenza positive specimen (influenza B) was reported from the NVRL from sentinel sources for week 48 2012. No influenza positive specimens were reported from the NVRL from non‐sentinel sources for week 48 2012.
?Respiratory syncytial virus (RSV) positivity levels remained at high levels during week 48 2012, as expected for this time of year.
?Two human metapneumovirus positive specimens were reported from the NVRL from non‐sentinel sources during week 48 2012.
?During week 48 2012, no confirmed influenza cases were hospitalised or admitted to ICU. There were no reports of any influenza‐associated deaths occurring during this period.
?No influenza/ILI outbreaks were reported to HPSC during week 48 2012.
?There remains little evidence of sustained influenza virus transmission in Europe. Much of the clinical influenza activity reported in EU/EEA countries was probably due to other respiratory pathogens including RSV.
...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13808,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 49 2012 (3rd ? 9th December 2012)

Summary
?All indicators of influenza activity in Ireland remained at low levels, however there was an increase in several indicators during week 49 2012:
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 11.7 per 100,000 population in week 49 2012, an increase compared to the updated rate of 6.3 per 100,000 reported during week 48 2012.
􀂊ILI rates remain below the Irish baseline threshold (21.0 per 100,000 population)*
􀂊There was an increase in ILI rates in all age groups, in particular in the 5‐14 year age group
?The proportion of influenza?related calls to GP Out‐of‐Hours services remained at low levels during week 49 2012.
?Influenza positivity increased during week 49 2012, compared to the previous week. One influenza A (H1N1)pdm09 and six influenza B positive specimens were reported from the NVRL for week 49 2012.
?Respiratory syncytial virus (RSV) positivity levels remained at high levels during week 49 2012, as expected for this time of year.
?Four adenovirus, one parainfluenza virus type 3, 10 human metapneumovirus positive specimens were reported from the NVRL from non‐sentinel sources during week 49 2012.
?During week 49 2012, no confirmed influenza cases were reported as hospitalised or admitted to ICU. There were no reports of any influenza‐associated deaths occurring during this period.
?One ILI outbreak and one human metapneumovirus outbreak were reported to HPSC during week 49 2012.
?Influenza activity remained low in Europe but has continued to increase slightly.
...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13838,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 50 2012 (10th ? 16th December 2012)

Summary
?All indicators of influenza activity in Ireland increased during week 50 2012, however remained at low levels:
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 24.9 per 100,000 population in week 50 2012, an increase compared to the updated rate of 11.3 per 100,000 reported during week 49 2012.
􀂊ILI rates are above the Irish baseline threshold (21.0 per 100,000 population)*, for the first time this season.
􀂊There was an increase in ILI rates in all age groups, with the exception of those aged 65 years or older.
?The proportion of influenza?related calls to GP Out‐of‐Hours services increased during week 50 2012.
?Influenza positivity increased during week 50 2012, compared to the previous week. One influenza A (H1N1)pdm09, three influenza A (H3) and nine influenza B positive specimens were reported from the NVRL for week 50 2012.
?Respiratory syncytial virus (RSV) positivity levels remained high during week 50 2012, as expected for this time of year.
?Two adenovirus, one parainfluenza virus type 3, six human metapneumovirus positive specimens were reported from the NVRL from sentinel and non‐sentinel sources during week 50 2012.
?During week 50 2012, one confirmed influenza B case was reported as hospitalised and admitted to ICU.
?There were no reports of any influenza‐associated deaths occurring during this period.
?No ILI/influenza outbreaks were reported to HPSC during week 50 2012.
?Influenza transmission for the 2012/2013 season appears to have started in Europe, based on increasing proportions of specimens testing positive for influenza.
...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13851,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Weeks 51 & 52 2012 (17th ? 30th December 2012)

Summary
?All indicators of influenza activity in Ireland continued to increase during weeks 51 and 52 2012.
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 35.7 per 100,000 population in week 52 2012, an increase compared to the rates of 31.6 per 100,000 during week 51 2012 and 22.8 per 100,000 during week 50 2012.
􀂊ILI rates are above the Irish baseline threshold (21.0 per 100,000 population)*
􀂊ILI age specific rates remain highest in the 5‐14 year age group.
?Influenza positivity increased during week 51 2012, compared to the previous week. Influenza positivity showed a decrease during week 52 2012, due to incomplete reporting during the Christmas and New Year holiday period. Two influenza A (H3) and 47 influenza B positive specimens were reported from the NVRL for weeks 51 and 52 2012. Influenza B is the dominant circulating influenza virus to date this season.
?Respiratory syncytial virus (RSV) positivity levels remained high during weeks 51 and 52 2012, as expected for this time of year.
?Two adenovirus, two parainfluenza virus (PIV) type 1, three PIV type 3, and eight human metapneumovirus positive specimens were reported from the NVRL from sentinel and non‐sentinel sources during weeks 51 and 52 2012.
?During weeks 51 and 52 2012, four influenza cases were reported as hospitalised.
?There were no reports of any influenza‐associated deaths occurring during this period.
?One respiratory syncytial virus (RSV) and two influenza B outbreaks were reported to HPSC during weeks 51 and 52 2012.
?Despite surveillance limitations over the Christmas and New Year holiday period, there are clear indications that influenza transmission continued to rise in Europe.
...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13859,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 1 2013 (31st December 2012 ? 6th January 2013)

Summary
? All indicators of influenza activity in Ireland continued to increase during week 1 2013.
o The sentinel GP influenza‐like illness (ILI) consultation rate was 62.6 per 100,000 population in week 1
2013, a significant increase compared to the updated rate of 33.1 per 100,000 during week 52 2012.
􀂊 ILI rates are above the Irish baseline threshold (21.0 per 100,000 population)
􀂊 ILI age specific rates were highest in the 15‐64 year age group.
? Influenza positivity increased during week 1 2013, compared to the previous week. Five influenza A (H3),
one influenza A (H1N1)pdm09, one influenza A (unsubtyped) and 59 influenza B positive specimens were
reported from the NVRL for week 1 2013.
? Influenza B remains the dominant circulating influenza virus to date this season, accounting for 90% of all
influenza positive specimens detected by the NVRL this season.
? Respiratory syncytial virus (RSV) positivity decreased during week 1 2013 for the second consecutive week,
however remained at high levels.
? Sporadic cases of adenovirus, parainfluenza viruses and human metapneumovirus were reported from the
NVRL during week 1 2013. Positivity levels for these viruses remained at low levels.
? During week 1 2013, 11 confirmed influenza cases were reported as hospitalised, one associated with
influenza A and 10 associated with influenza B. To date this season, 19 confirmed influenza cases were
reported as hospitalised, 84% were associated with influenza B.
? Three confirmed influenza B adult cases were admitted to critical care and reported to HPSC this season.
? There were no reports of any confirmed influenza‐associated deaths occurring this season.
? Two influenza B and one RSV general outbreaks* were reported to HPSC during week 1 2013.
? Influenza activity continued to rise in a number of EU/EEA countries, especially in Western Europe. Greater
numbers of severe laboratory‐confirmed cases are now being reported.

...
http://www.hpsc.ie/hpsc/A-Z/Respira...lanceReports/20122013Season/File,13861,en.pdf
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 2 2013 (7th ? 13th January 2013)

Summary
?Influenza activity in Ireland stabilised during week 2 2013, however remained at elevated levels.
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 51.8 per 100,000 population in week 2 2013, a slight decrease compared to the updated rate of 62.1 per 100,000 during week 1 2012.
􀂊ILI rates are above the Irish baseline threshold (21.0 per 100,000 population)
􀂊ILI age specific rates were highest in those aged 65 years or older and have increased in this age group for two consecutive weeks.
?Influenza positivity stabilised during week 2 2013, compared to the previous week. Sixty influenza B, three influenza A (H3), two influenza A (H1)pdm09 and one influenza A (unsubtyped) positive specimens were reported from the NVRL for week 2 2013.
?Influenza B remains the dominant circulating influenza virus to date this season, accounting for 90% of all influenza positive specimens detected by the NVRL this season.
?Respiratory syncytial virus (RSV) positivity peaked during week 51 2012 and has decreased significantly since then.
?Sporadic cases of human metapneumovirus, adenovirus, parainfluenza viruses and were reported from the NVRL during week 2 2013. Positivity levels of these viruses have remained at low levels this season.
?During week 2 2013, 26 confirmed influenza cases were reported as hospitalised, six associated with influenza A and 20 associated with influenza B. To date this season, 45 confirmed influenza cases were reported as hospitalised, 80% were associated with influenza B.
?Five adult and two paediatric confirmed influenza cases have been admitted to critical care to date this season. Of these seven cases, six were associated with influenza B and one with influenza A (H1)pdm09. Thirty‐two RSV* paediatric cases were also admitted to critical care this season.
?There were no reports of any confirmed influenza‐associated deaths occurring this season.
?Two acute respiratory outbreaks? in residential institutions, one influenza A (H3) and one ILI, were reported to HPSC during week 2 2013.
?Influenza activity increased substantially in a number of EU/EEA countries in week 1 2012, especially in north‐western Europe. The virological pattern being identified in the EU/EEA is different from that being reported to date from North America. ECDC has reported that the virological match with the strains in the current seasonal influenza vaccine is considered good.
...
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 3 2013 (14th ? 20th January 2013)

Summary
?Most indicators of influenza activity in Ireland decreased during week 3 2013, compared to the previous week.
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 49.8 per 100,000 population in week 3 2013, a slight decrease compared to the updated rate of 53.2 per 100,000 during week 2 2012.
􀂊ILI rates are above the Irish baseline threshold (21.0 per 100,000 population)
􀂊ILI age specific rates were highest in the 15‐64 year age group.
?The proportion of influenza?related calls to GP Out‐of‐Hours services decreased during week 3 2013.
?Influenza positivity decreased to 20.6% during week 3 2013, compared to 26.9% during the previous week. Thirty‐nine influenza B, nine influenza A (H3), four influenza A (H1)pdm09 and one influenza A (unsubtyped) positive specimens were reported from the NVRL for week 3 2013.
?Influenza B remains the dominant circulating influenza virus to date this season, accounting for 86.8% of all influenza positive specimens detected by the NVRL this season. Influenza A positivity has increased slightly in recent weeks.
?Respiratory syncytial virus (RSV) positivity peaked during week 51 2012 and has decreased significantly since. However, RSV continues to circulate at elevated levels.
?Sporadic cases of adenovirus and human metapneumovirus were reported from the NVRL during week 3 2013. Positivity levels of these viruses have remained at low levels this season.
?During week 3 2013, 21 confirmed influenza cases were reported as hospitalised, two associated with influenza A and 19 associated with influenza B. To date this season, 66 confirmed influenza cases were reported as hospitalised, 86.4% were associated with influenza B.
?Seven adult and two paediatric confirmed influenza cases have been admitted to critical care to date this season. Of these nine cases, eight were associated with influenza B and one with influenza A (H1)pdm09. Thirty‐two RSV* paediatric cases were also admitted to critical care this season.
?There were no reports of any confirmed influenza‐associated deaths occurring this season to date.
?Two acute respiratory outbreaks? (one influenza A(H3) and one influenza B) in long stay units for the elderly, were reported to HPSC during week 3 2013.
?Influenza activity continued to increase in week 2 2013 across most of Europe, with reports of severe cases from a number of countries. At present, indications of higher transmission levels are mostly from North‐West Europe. There are some early indications of increases in overall mortality in older people associated with influenza in Europe.
...
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 4 2013(21st ? 27thJanuary 2013)

Summary
? Influenza activity in Ireland remained stable during week 4 2013, compared to the previous week. Hospitalisations and outbreaks associated with influenza/influenza‐like illness continue to be reported.
o The sentinel GP influenza‐like illness (ILI) consultation rate was 48.5 per 100,000 population in week 4 2013, remaining unchanged compared to the updated rate of 47.2 per 100,000 during week 3 2013.
􀂊 ILI rates are above the Irish baseline threshold (21.0 per 100,000 population)
􀂊 ILI age specific rates increased significantly in the 5‐14 year age group
? The proportion of influenza?related calls to GP Out‐of‐Hours services increased slightly during week 4 2013.
? Influenza positivity decreased to 12.9% during week 4 2013, compared to 22.2% during the previous week. Twenty‐seven influenza B, three influenza A (H3) and one influenza A (unsubtyped) positive specimens were reported from the NVRL for week 4 2013.
? Influenza B remains the dominant circulating influenza virus to date this season, accounting for 86.6% of all influenza positive specimens detected by the NVRL this season. Influenza A and B positivity decreased during week 4 2013, compared to the previous week.
? Respiratory syncytial virus (RSV) positivity peaked during week 51 2012 and has decreased significantly since. RSV continues to circulate at low levels.
?
Positivity levels for adenovirus, parainfluenza viruses and human metapneumovirus have remained at low levels this season.
? During week 4 2013, 20 confirmed influenza cases were reported as hospitalised, ten associated with influenza A and 10 with influenza B. To date this season, 86 confirmed influenza cases were reported as hospitalised, 77.9% were associated with influenza B.
? Nine adult and two paediatric confirmed influenza cases have been admitted to critical care to date this season. Of these 11 cases, eight were associated with influenza B, one with influenza A (H1)pdm09 and two with influenza A (unsubtyped). Thirty‐two RSV*paediatric cases were also admitted to critical care this season.
? There were no reports of any confirmed influenza‐associated deaths occurring this season to date.
? One ILI outbreak in a school was reported to HPSC during week 4 2013.
? Influenza activity remained high and increasing in many European countries during week 3 2013, although transmission may have peaked in some countries, particularly in Western Europe.
...
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 5 2013 (28th January ? 3rd February 2013)

Summary
?Influenza activity in Ireland increased during week 5 2013, compared to the previous week. Hospitalisations and outbreaks associated with influenza/influenza‐like illness continue to be reported.
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 62.2 per 100,000 population in week 5 2013, an increase compared to the updated rate of 48.0 per 100,000 during week 4 2013.
􀂊ILI rates are above the Irish baseline threshold (21.0 per 100,000 population).
􀂊ILI age specific rates were highest in the 5‐14 year age group.
?The proportion of influenza?related calls to GP Out‐of‐Hours services remained stable during week 5 2013, compared to the previous week.
?Influenza positivity increased to 31.3% during week 5 2013, compared to 17.8% during the previous week. Fifty‐seven influenza B, eight influenza A(H3) and five influenza A(H1)pdm09 positive specimens were reported from the NVRL for week 5 2013.
?Influenza B remains the dominant circulating influenza virus to date this season, accounting for 81.4% of all influenza positive specimens detected by the NVRL this season. Influenza A and B positivity increased during week 5 2013, compared to the previous week.
?Respiratory syncytial virus (RSV) positivity peaked during week 51 2012 and has decreased significantly since. RSV continues to circulate at low levels.
?Positivity levels for adenovirus, parainfluenza viruses and human metapneumovirus have remained at low levels this season.
?During week 5 2013, 16 confirmed influenza cases were reported as hospitalised, three associated with influenza A and 13 with influenza B. To date this season, 101 confirmed influenza cases were reported as hospitalised, 79.2% were associated with influenza B.
?Nine adult and four paediatric confirmed influenza cases have been admitted to critical care to date this season. Of these 13 cases, 10 were associated with influenza B, one with influenza A (H1)pdm09 and two with influenza A (unsubtyped). Thirty‐two RSV*paediatric cases were also admitted to critical care this season.
?One confirmed influenza B‐associated death was reported to HPSC to date this season.
?Three acute respiratory outbreaks were reported to HPSC during week 5 2013.
?Influenza activity continued to increase in week 4 2013 across Europe, although the epidemic may have passed its peak in some north‐western countries.
...
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 6 2013 (4th ? 10th February 2013)

Summary
?Several indicators of influenza activity in Ireland decreased slightly during week 6 2013, compared to the previous week, however influenza‐associated hospitalisations continue to be reported.
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 58.8 per 100,000 population in week 6 2013, a slight decrease compared to the updated rate of 60.7 per 100,000 during week 5 2013.
􀂊ILI rates are above the Irish baseline threshold (21.0 per 100,000 population).
􀂊ILI age specific rates were highest in the 5‐14 year age group.
?The proportion of influenza?related calls to GP Out‐of‐Hours services decreased slightly during week 6 2013, compared to the previous week.
?Influenza positivity decreased to 26.8% during week 6 2013, compared to 35.6% during the previous week. Forty‐eight influenza B, 15 influenza A(H3), seven influenza A(H1)pdm09 and one influenza A (unsubtyped) positive specimens were reported from the NVRL for week 6 2013.
?Influenza B remains the dominant circulating influenza virus to date this season, accounting for 82.8% of all influenza positive specimens detected by the NVRL this season.
?Respiratory syncytial virus (RSV) positivity peaked during week 51 2012 and has decreased significantly since. RSV continues to circulate at low levels.
?Positivity levels for adenovirus, parainfluenza viruses and human metapneumovirus have remained at low levels this season.
?During week 6 2013, 26 confirmed influenza cases were reported as hospitalised, six associated with influenza A and 20 with influenza B. To date this season, 127 confirmed influenza cases were reported as hospitalised, 78.7% were associated with influenza B.
?Nine adult and four paediatric confirmed influenza cases have been admitted to critical care to date this season. Of these 13 cases, 10 were associated with influenza B, one with influenza A (H1)pdm09 and two with influenza A (unsubtyped). Thirty‐two RSV*paediatric cases were also admitted to critical care this season.
?To date this season, one confirmed influenza B‐associated death was reported to HPSC (during week 5 2013).
?One acute respiratory outbreak was reported to HPSC during week 6 2013.
?Influenza activity continued to rise across Europe during week 5 2013. In a few European countries, influenza epidemics have passed their peaks, although some countries have experienced a resurgence of ILI activity.
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 7 2013 (11th ? 18th February 2013)

Summary
?Several indicators of influenza activity in Ireland decreased during week 7 2013, compared to the previous week, however influenza‐associated hospitalisations and outbreaks continue to be reported.
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 40.9 per 100,000 population in week 7 2013, a decrease compared to the updated rate of 58.1 per 100,000 during week 6 2013.
􀂊ILI rates are above the Irish baseline threshold (21.0 per 100,000 population).
􀂊ILI age specific rates decreased in all age groups.
?The proportion of influenza?related calls to GP Out‐of‐Hours services decreased during week 7 2013, compared to the previous week.
?Influenza positivity decreased to 18.8% during week 7 2013, compared to 33.8% during the previous week. Twenty‐four influenza B, 12 influenza A(H3) and nine influenza A(H1)pdm09 positive specimens were reported from the NVRL for week 7 2013.
?During week 7 2013, both influenza A and B were co‐circulating.
?Respiratory syncytial virus (RSV) positivity peaked during week 51 2012 and has decreased significantly since. RSV continues to circulate at low levels.
?Positivity levels for adenovirus, parainfluenza viruses and human metapneumovirus have remained at low levels this season.
?During week 7 2013, 40 confirmed influenza cases were reported as hospitalised, 11 associated with influenza A and 29 with influenza B. To date this season, 167 confirmed influenza cases were reported as hospitalised, 77.2% were associated with influenza B.
?Ten adult and four paediatric confirmed influenza cases have been admitted to critical care to date this season. Of these 14 cases, 10 were associated with influenza B, one with influenza A (H1)pdm09 and three with influenza A (unsubtyped). Thirty‐two RSV*paediatric cases were also admitted to critical care this season.
?To date this season, one confirmed influenza B‐associated death was reported to HPSC (during week 5 2013).
?Four acute respiratory outbreaks were reported to HPSC during week 7 2013.
?Significant influenza activity continued across Europe in week 6 2013, despite having peaked in a few countries in earlier weeks.
...
 
Re: Influenza Surveillance 2012-2013

Influenza Surveillance in Ireland ? Weekly Report
Influenza Week 8 2013 (18th ? 24th February 2013)

Summary
?Influenza activity in Ireland stabilised during week 8 2013, compared to the previous week, however influenza‐associated hospitalisations and outbreaks continue to be reported.
oThe sentinel GP influenza‐like illness (ILI) consultation rate was 39.7 per 100,000 population in week 8 2013, remaining stable compared to the updated rate of 39.8 per 100,000 during week 7 2013.
􀂊ILI rates are above the Irish baseline threshold (21.0 per 100,000 population).
􀂊ILI age specific rates were highest in the 15‐64 year age group during week 8 2013.
?The proportion of influenza?related calls to GP Out‐of‐Hours services decreased during week 8 2013, for the second consecutive week.
?Influenza positivity was 27.4% during week 8 2013, compared to 26.8% during the previous week. Twenty‐four influenza A(H3), 16 influenza A(H1)pdm09, 6 A (unsubtyped) and 31 influenza B, positive specimens were reported from the NVRL for week 8 2013.
oThe percentage positivity for influenza A (59.7%) was higher than for influenza B (40.3%).
?Respiratory syncytial virus (RSV) positivity remained at low levels during week 8 2013.
?Positivity levels for adenovirus, parainfluenza viruses and human metapneumovirus have remained at low levels this season.
?During week 8 2013, 36 confirmed influenza cases were reported as hospitalised, 17 associated with influenza A and 19 with influenza B. To date this season, 204 confirmed influenza cases were reported as hospitalised, 72.5% were associated with influenza B.
?Ten adult and four paediatric confirmed influenza cases have been admitted to critical care to date this season. Of these 14 cases, 10 were associated with influenza B, one with influenza A (H1)pdm09 and three with influenza A (unsubtyped). Thirty‐two RSV*paediatric cases were also admitted to critical care this season.
?To date this season, one confirmed influenza B‐associated death was reported to HPSC (during week 5 2013).
?Six acute respiratory outbreaks were reported to HPSC during week 8 2013.
?Influenza activity remained significant in week 7 2013 across Europe; however an increasing number of countries reported declining influenza transmission.
? The WHO consultation on the composition of influenza virus vaccines for the Northern Hemisphere 2013/2014 took place on the 21st February 2013. Further details on these recommendations can be found here.
...
 
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