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Oregon 2010-2011 Season: Weeks 40-18 (Final Report)
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Re: Oregon 2010-2011 Season: Weeks 40-44
? Influenza activity remained low during Weeks 43-44 (October 24-Nov 6, 2010) in Oregon.
? No influenza virus activity was detected by culture or PCR at the Oregon State Public Health Laboratory during this time period.
? There have been no influenza-associated hospitalizations reported within the Portland Tricounty area since the beginning of the season (October 1, 2010).
? RSV percent positivity was 6% for the week ending November 6th, 2010.
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Re: Oregon 2010-2011 Season: Weeks 40-47
Week 47:
Influenza activity remained low during Weeks 45-47 (Nov. 7 ? Nov. 27, 2010) in Oregon.
No influenza virus activity was detected by culture or PCR at the Oregon State Public Health Laboratory during this time period.
There have been no influenza-associated hospitalizations reported within the Portland Tricounty area since the beginning of the season (October 1, 2010).
RSV percent positivity was 10% for the week ending November 27th, 2010.
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Re: Oregon 2010-2011 Season: Weeks 40-49
Weeks 48-49: Influenza activity remained low
ILI: 1.24%
One positive influenza A/H3 specimen was detected at the Oregon State Public Health Laboratory during this time period.
There have been no influenza-associated hospitalizations reported within the Portland Tricounty area since the beginning of the season (October 1, 2010).
RSV: 12%
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Re: Oregon 2010-2011 Season: Weeks 40-52
Weeks 50-52: Sporadic
2 hospitalizations
ILI week 50: 1.34%
ILI week 51: 0.82%
Since the start of official influenza surveillance in week 39 (October 1, 2010), the OSPHL has identified seven positive specimens, all of which were sub-typed by PCR as influenza A/H3. Three specimens were collected during week 50 (Dec 12-18) and four specimens were collected during week 51 (Dec 19-25). Positive specimens have come from patients in the Portland Metro region, Northeast Oregon/Gorge region, and Southern Oregon.
RSV: 26% (week 52)
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Re: Oregon 2010-2011 Season: Weeks 40-2
Influenza activity has remained fairly steady during Weeks 1-2 (Jan. 2 –15, 2011) in Oregon, although we are seeing more positive influenza specimens at the Oregon State Public Health Laboratory (OSPHL). Types/subtypes identified in the past two weeks include influenza B, influenza A/H3, and 2009 H1N1.
There have been two influenza-associated hospitalizations reported within the Portland Tri-County area during Weeks 1-2.
RSV season in Oregon began the week of December 26, 2011-January 1, 2011. RSV percent positivity was 28% for the week ending January 15, 2011.
Outpatient ILI: 2.32% (week 2); 1.42% (week 1)
20% positive specimens for influenza
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Re: Oregon 2010-2011 Season: Weeks 40-4
Weeks: 3 ... 4: Sporadic
ILI: 1.65%; 1.76%
• Influenza activity increased slightly during Weeks 3 and4 (Jan. 16–29, 2011) in Oregon. Circulating types/subtypes identified so far this season include influenza B, influenza A/H3, and 2009 H1N1. In the past week, 2009 H1N1 has been the only subtype identified by the state laboratory.
• There have been four influenza-associated hospitalizations reported within the Portland Tri-County area during Weeks 1-4.
• RSV season officially began in Oregon the week of December 26, 2011-January 1, 2011. RSV percent positivity was 37% for the week ending January 29, 2011.
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Re: Oregon 2010-2011 Season: Weeks 40-5 (Two Deaths, Total 2)
Week 5: Sporadic
2 deaths reported from week 3 (both adults testing positive for 2009 A/H1N1); total 2
ILI: 1.22% http://www.oregon.gov/DHS/ph/acd/flu/ilicnt1011.pdf
Influenza activity decreased slightly during Week 5 (Jan. 30 – Feb. 5, 2011) in Oregon. Circulating types/subtypes identified so far this season include influenza B, influenza A/H3, and 2009 H1N1, all of which have been identified by the state laboratory in the past week.
There have been four influenza-associated hospitalizations reported within the Portland Tri-County area during Weeks 4-5. Total (since week 50) is 9.
There have been two influenza-related deaths reported in Oregon so far this season; both deaths occurred in adults during the week of January 16-22, 2011 (Week 3). Both patients tested positive for 2009 H1N1 influenza.
RSV season began officially in Oregon the week of December 26, 2011-January 1, 2011. RSV percent positivity was 37% for the week ending February 5, 2011.
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Re: Oregon 2010-2011 Season: Weeks 40-5 (Two Deaths, Total 2)
Oregon has remained with "sporadic" activity during increased ILI and two deaths.
Here are the CDC definitions:
* No Activity: No laboratory-confirmed cases of influenza and no reported increase in the number of cases of ILI.
* Sporadic: Small numbers of laboratory-confirmed influenza cases or a single laboratory-confirmed influenza outbreak has been reported, but there is no increase in cases of ILI.
* Local: Outbreaks of influenza or increases in ILI cases and recent laboratory-confirmed influenza in a single region of the state.
* Regional:Outbreaks of influenza or increases in ILI and recent laboratory confirmed influenza in at least two but less than half the regions of the state with recent laboratory evidence of influenza in those regions.
* Widespread:Outbreaks of influenza or increases in ILI cases and recent laboratory-confirmed influenza in at least half the regions of the state with recent laboratory evidence of influenza in the state.
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Re: Oregon 2010-2011 Season: Weeks 40-6 (No New Deaths, Total 2)
Week 6: Sporadic
7 new hospitalizations (increase in ages 25-64); total 16
ILI: 1.58% (below base)
46% positive for influenza: majority 2009 A(H1N1)
RSV: 38%
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Re: Oregon 2010-2011 Season: Weeks 40-7 (No New Deaths, Total 2)
Week 7: Sporadic
5 new hospitalizations
ILI: 2.34%
22% positive for influenza: majority 2009 A(H1N1)
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Re: Oregon 2010-2011 Season: Weeks 40-8 (One New Pediatric Death, Total 3)
Week 8: Local activity
1 new death; total 3 (two deaths occurred in adults during the week of January 16-22, 2011 (Week 3) and the third occurred in a pediatric patient at the beginning of Week 9. PCR results from these patients include 2009 H1N1 and influenza A/H3.)
12 new hospitalizations (majority over 49 years of age); 35 total
ILI: 1.15%
44% positive for influenza (majority A/H3)
RSV: 27%
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Re: Oregon 2010-2011 Season: Weeks 40-10 (No New Deaths, Total 3)
Week 10:
No new deaths; total 3
19 new hospitalizations
ILI: 1.5%
19% positive for influenza (majority A/H3)
There have been three influenza-related deaths reported in Oregon so far this season; two deaths occurred in adults during the week of January 16-22, 2011 (Week 3) and the third occurred in a pediatric patient during Week 9. Influenza subtypes identified from these patients include 2009 H1N1 and influenza A/H3
RSV percent positivity was 23% for the week ending March 12, 2011; peak positivity was 39% during the week ending February 12.
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