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Illinois 2010-2011 Season: Weeks 40-20 (No New Death; Total 21)

Re: Illinois 2010-2011 Season: Weeks 40-45

Re: Illinois 2010-2011 Season: Weeks 40-45

Week 45: Sporadic
During CDC Week 45, the proportion of outpatient visits for influenza-like illness (ILI)was 1.8%.
The risk of illness due to influenza viruses is low. Numerous respiratory viruses can
cause ILI, and these viruses are now more prevalent than influenza viruses.
Febrile Respiratory Illness at Great Lake Naval Academy was at or below expected level.
During week 45, one (2.7%) of the specimens tested by Illinois Department of Public
Health laboratory tested positive for influenza. The isolate was influenza A human (H3)
subtype.
No influenza-associated pediatric deaths were reported.
No Influenza related ICU admissions and deaths were reported.
http://www.idph.state.il.us/flu/fluupdate10-11.htm
 
Re: Illinois 2010-2011 Season: Weeks 40-46

Re: Illinois 2010-2011 Season: Weeks 40-46

Week 46: Sporadic
ILI: 1.7%
During week 46, one (3.6%) of the specimens tested by Illinois Department of Public
Health laboratory tested positive for influenza. The isolate was influenza A human (H3)
subtype.

No influenza-associated pediatric deaths were reported.
No Influenza related ICU admissions and deaths were reported.
http://www.idph.state.il.us/flu/fluupdate10-11.htm
 
Re: Illinois 2010-2011 Season: Weeks 40-47

Re: Illinois 2010-2011 Season: Weeks 40-47

Week 47: Sporadic
During CDC Week 47, the proportion of outpatient visits for influenza-like illness (ILI)1 was 2.0%.

During week 47, one (10%) of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza. The isolate was influenza A human (H3) subtype.

No influenza-associated pediatric deaths were reported.
No Influenza related ICU admissions and deaths were reported.

http://www.idph.state.il.us/flu/fluupdate10-11.htm
 
Re: Illinois 2010-2011 Season: Weeks 40-48 (Local)

Re: Illinois 2010-2011 Season: Weeks 40-48 (Local)

Week 48: Local Activity
ILI: 1.4%.
The risk of illness due to influenza viruses is low. Numerous respiratory viruses can
cause ILI, and these viruses are now more prevalent than influenza viruses.
Febrile Respiratory Illness at Great Lake Naval Academy was at or below expected level.
During week 48, six (25%) of the specimens tested by Illinois Department of Public
Health laboratory tested positive for influenza. The isolates were all influenza A human
(H3) subtype.
No influenza-associated pediatric deaths were reported.
Two Influenza related ICU admissions and no deaths were reported.
http://www.idph.state.il.us/flu/fluupdate10-11.htm
 
Re: Illinois 2010-2011 Season: Weeks 40-51

Re: Illinois 2010-2011 Season: Weeks 40-51

Week 51: Local Activity
ILI: 3.5%.
37% of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza (A/H3; 2009 Influenza A H1N1)
No influenza-associated pediatric deaths were reported during week 51.
Nine influenza related ICU admissions and no deaths were reported during week 51.
http://www.idph.state.il.us/flu/fluupdate10-11.htm
 
Re: Illinois 2010-2011 Season: Weeks 40-1 (One Death Reported)

Re: Illinois 2010-2011 Season: Weeks 40-1 (One Death Reported)

Seven influenza related ICU admissions and one death were reported during week 52.
ILI: 3.9%
45% of the specimens tested positive for influenza. Thirty (79%) of the isolates were influenza A human (H3) subtype, and eight (21%) were 2009 Influenza A H1N1.
No influenza-associated pediatric deaths were reported during week 52.

Week 1: Regional
http://www.idph.state.il.us/flu/fluupdate10-11.htm
 
Re: Illinois 2010-2011 Season: Weeks 40-2 (Regional)

Re: Illinois 2010-2011 Season: Weeks 40-2 (Regional)

During CDC Week 1, the proportion of outpatient visits for influenza-like illness was 3.3%. Although there was a decrease in overall ILI activity; some regions had increases in ILI activity. Children under the age of 5 years have the highest proportion of office visits related to ILI.

During week 1, thirty-five (43%) of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza. Of these, twenty-four (69%) of the isolates were influenza A human (H3) subtype, and eleven (31%) were 2009 Influenza A H1N1.

Three influenza related ICU admissions and no deaths were reported during week 1.

Week 2: Regional Activity
http://www.idph.state.il.us/flu/fluupdate10-11.htm
 
Re: Illinois 2010-2011 Season: Weeks 40-3 (Two Pediatric Deaths; Total 3)

Re: Illinois 2010-2011 Season: Weeks 40-3 (Two Pediatric Deaths; Total 3)

Week 3: Regional
2 pediatric deaths; total 3
10 hospitalizations

• ILI: 4.16%, and ILI activity increased in several regions.
• Children under the age of 5 years have the highest proportion of office visits related to ILI.
• 45% of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza: 58% A/H3; 36% 2009 A/H1N1; 6% influenza B.
http://www.idph.state.il.us/flu/fluupdate10-11.htm

Week 4: Widespread
Cook County
Syndromic Surveillance ILI: 2.18%
Sentinel ILI: 9.6%
26.5% positive specimens for influenza: 51.2% H3N2; 48.8% H1N1; and B

Since October 3rd, 2010 (week 40), suburban Cook County has had 24 confirmed cases of influenza associated
intensive care unit (ICU) hospitalizations. During week 4, 9 ICU hospitalizations due to influenza infection
were reported to CCDPH.
http://www.cookcountypublichealth.org/data-reports#Influenza
 
Re: Illinois 2010-2011 Season: Weeks 40-3 (Two Pediatric Deaths)

Re: Illinois 2010-2011 Season: Weeks 40-3 (Two Pediatric Deaths)

http://www.idph.state.il.us/flu/10-11/1-29-11.pdf

Here are the charts from Week 4. Illinois has just started to see pH1N1 in Weeks 3 and 4, and wow, the %ILI has sure shot up in the 5-24 age range during that same timeframe.

Week 4 IL ILI.png

Week 4 IL Isolates.png
 
Re: Illinois 2010-2011 Season: Weeks 40-4 (No New Deaths; Total 3)

Re: Illinois 2010-2011 Season: Weeks 40-4 (No New Deaths; Total 3)

Week 4: Widespread
No new deaths; total 3
13 hospitalizations
2 outbreaks of influenza reported in long-term care facilities

ILI: 4.74% (most affected, age-group 5-24)
43% positive specimens for influenza: 61% A/H3; 35% 2009 A/H1N1
http://www.idph.state.il.us/flu/10-11/1-29-11.pdf

Week 5: Widespread
ILI: 5.1% (Individuals aged 5 to 24 years had the highest proportion of office visits related to ILI for week 5.)

10% of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza. Of the positive specimens, three (75%)
of the isolates were influenza A human (H3) subtype, and one (25%) were 2009 influenza A H1N1.

No influenza-associated pediatric deaths were reported to IDPH during week 5.
Two influenza-related ICU admissions and no deaths were reported to IDPH during week 5.
http://www.idph.state.il.us/flu/fluupdate10-11.htm
 
Re: Illinois 2010-2011 Season: Weeks 40-5 (Five New Deaths; Total 8)

Re: Illinois 2010-2011 Season: Weeks 40-5 (Five New Deaths; Total 8)

http://www.idph.state.il.us/flu/10-11/2-5-11.pdf

You'd think that during peak flu season and Widespread flu conditions, that a state like Illinois would do a little more testing of samples. Perhaps the state lab is experiencing budget cuts, given also that they are a week behind most other states in providing weekly surveillance reports.

Week 5 IL Isolates.png
 
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