Re: New Zealand Influenza Surveillance 2012
INFLUENZA WEEKLY UPDATE
2012/35: 27 August ? 2 September 2012
Summary
? ILI through sentinel surveillance was reported from 19 out of 20 District Health Boards
(DHB) with a national consultation rate of 36.7 per 100 000 (137 ILI consultations).
? A total of 391 swabs were received from sentinel (30) and non-sentinel (361)
surveillance.
? 113 viruses were identified: A(H3N2) (70) ) including four A/Perth/16/2009 (H3N2)-like
viruses, A (Not subtyped) (24), B (15) including one B/Wisconsin/1/2010-like and
A(H1N1)pdm09 (4).
In week 35, ILI consultation rate has decreased below the baseline. The proportion of positive
influenza samples has also decreased. Influenza A(H3N2) viruses remain the predominant
virus in many regions. These viruses do not appear to demonstrate a major antigenic drift.
INFLUENZA-LIKE ILLNESS SURVEILLANCE
In the past week, a total of 137 consultations for ILI were reported from 79 general practices
in 19 out of 20 DHBs. This gives a weekly consultation rate 36.7 of per 100 000 patient
population, a decrease from 58.6 per 100 000 reported in week 34. Figure 1 shows the
weekly national consultation rates for 2007?2012 to date.
...
INFLUENZA WEEKLY UPDATE
2012/35: 27 August ? 2 September 2012
Summary
? ILI through sentinel surveillance was reported from 19 out of 20 District Health Boards
(DHB) with a national consultation rate of 36.7 per 100 000 (137 ILI consultations).
? A total of 391 swabs were received from sentinel (30) and non-sentinel (361)
surveillance.
? 113 viruses were identified: A(H3N2) (70) ) including four A/Perth/16/2009 (H3N2)-like
viruses, A (Not subtyped) (24), B (15) including one B/Wisconsin/1/2010-like and
A(H1N1)pdm09 (4).
In week 35, ILI consultation rate has decreased below the baseline. The proportion of positive
influenza samples has also decreased. Influenza A(H3N2) viruses remain the predominant
virus in many regions. These viruses do not appear to demonstrate a major antigenic drift.
INFLUENZA-LIKE ILLNESS SURVEILLANCE
In the past week, a total of 137 consultations for ILI were reported from 79 general practices
in 19 out of 20 DHBs. This gives a weekly consultation rate 36.7 of per 100 000 patient
population, a decrease from 58.6 per 100 000 reported in week 34. Figure 1 shows the
weekly national consultation rates for 2007?2012 to date.
...
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