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Illinois 2010-2011 Season: Weeks 40-20 (No New Death; Total 21)
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.
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.
The Epidemiology Unit at CCDPH provides data to better understand the health of suburban Cook County. We track health trends, hospital visits, and factors like housing, income, and environment. This information guides programs and plans that protect health, prevent disease, and prepare for emerging challenges.
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.
"I know God will not give me anything I can't handle. I just wish that He didn't trust me so much." - Mother Teresa of Calcutta
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.
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.
"I know God will not give me anything I can't handle. I just wish that He didn't trust me so much." - Mother Teresa of Calcutta
During CDC Week 6, the proportion of outpatient visits for influenza-like illness (ILI)1 was 4.05%, and ILI activity remained elevated. Febrile Respiratory Illness at Great Lake Naval Academy was at or below expected value for week 6. Individuals aged 5 to 24 years had the highest proportion of office visits related to ILI for week 6. During week 6, four (15%) of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza. Of the positive specimens, two (50%) of the isolates were influenza A human (H3) subtype, and two (50%) were 2009 influenza A H1N1. Thirty-eight influenza-related ICU admissions and five influenza-related ICU death were reported to IDPH during week 6. Two outbreaks due to influenza were reported from long-term care facilities during week 6.
Re: Illinois 2010-2011 Season: Weeks 40-7 (No New Deaths; Total 8)
Week 7: Widespread
No new deaths; total 8 (see correction above)
ILI: 4.71%
Febrile Respiratory Illness at Great Lake Naval Academy was at or below expected value for week 7. Individuals aged 5 to 24 years had the highest proportion of office visits related to ILI for week 7.
6% of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza. Of the positive specimens, two (40%) of the isolates were influenza A human (H3) subtype, two (40%) were 2009 influenza A H1N1, and one (20%) was influenza B. No influenza-associated pediatric deaths were reported to IDPH during week 7.
Six influenza-related ICU admissions and no influenza-related ICU deaths were reported to IDPH during week 7.
Five outbreaks due to influenza were reported from long-term facilities.
ILI: 3.66% (Individuals aged 0 to 4 years had the highest proportion of office visits related to ILI for week 8.)
19% positive for influenza (majority A/H3) No influenza-associated pediatric deaths were reported to IDPH during week 8. NOTE: The one listed in MMWR occurred in another week.
One influenza-related ICU admission and no influenza-related ICU deaths were reported to IDPH during week 8. No outbreaks due to influenza were reported from long-term care facilities during week 8. An influenza outbreak was reported in a correctional facility during week 8.
Week 9: Widespread
ILI:3.23% (Individuals aged 0 to 4 years had the highest proportion of office visits related to ILI for week 9)
During week 9, eighteen (46%) of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza. Of the positive specimens, 5 (28%) of the isolates were influenza A human (H3) subtype, and 13 (72%) were 2009 influenza A H1N1.
No influenza-associated pediatric deaths were reported to IDPH during week 9.
Twenty-eight influenza-related ICU admissions and one influenza-related ICU death was reported to IDPH during week 9.
No outbreaks due to influenza were reported from long-term care facilities during week 9. An influenza outbreak in a correctional facility was reported during week 9.
Re: Illinois 2010-2011 Season: Weeks 40-10 (Five New Deaths; Total 15)
Week 10: Regional (appears to have had a second peak in week 9 with A/2009 H1N1 as predominant)
NOTE: I have not been reading this report correctly. IL is reporting adult deaths within the ICU in their reports. I have gone back through and made corrections in the deaths. The 2 pediatric deaths reported this week have already been counted in above reports) Five new deaths; total 15 (5 pediatric; 10 adult)
During CDC Week 10, the overall proportion of outpatient visits for influenza-like illness (ILI)1 was 2.3%, compared with 3.3% for week 9. This represents a 43% decrease in ILI activity from week 9. The intensity of ILI activity in Illinois was minimal for week 10. Febrile Respiratory Illness at Great Lake Naval Academy was at or below expected value for week 10.
Individuals aged 0 to 4 years had the highest proportion of office visits related to ILI for week 10. The proportion of 0-4 years accounted for 35% of total ILI visits compared with 44% for week 9. This represents a 20% decrease in ILI activity among this age group.
During week 10, eight (20%) of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza. Of the positive specimens, 4 (50%) were 2009 influenza A H1N1 and 4 (50%) were Influenza B.
Two influenza-associated pediatric deaths were reported to IDPH during week 10.
Sixteen influenza-related ICU admissions and three influenza-related ICU deaths were reported to IDPH during week 10.
No outbreaks due to influenza were reported from long-term care facilities during week 10.
Re: Illinois 2010-2011 Season: Weeks 40-11 (Two New Deaths; Total 18)
Addition to week 11: Local, minimal activity 2 adult deaths; total 18
ILI: 3.3%, compared with 2.3% for week 10. Individuals aged 0 to 4 years had the highest proportion of office visits related to ILI for week 11. The proportion of 0-4 years accounted for 51% of total ILI visits compared with 35% for week 10.
During week 11, six (33%) of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza. Of the positive specimens, 5 (83%) were 2009 influenza A H1N1 and 1 (17%) was influenza A human (H3) subtype.
One influenza-associated pediatric death was reported to IDPH during week 11. Thirteen influenza-related ICU admissions and two influenza-related ICU deaths were reported to IDPH during week 11. Four outbreaks due to influenza were reported from long-term care facilities during week 11.
Re: Illinois 2010-2011 Season: Weeks 40-13 (One New Death; Total 19)
Week 12: Local
No new deaths; total 18
ILI: 2.7% (Individuals aged 0 to 4 years had the highest proportion of office visits related to ILI for week 12. This age group accounted for 46% of total ILI visits compared with 51% for week 11)
17% of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza. Of the positive specimens, 2 (67%) were influenza A Human (H3) subtype and 1 (33%) was influenza B.
Six influenza-related ICU admissions and no influenza-related ICU deaths were reported to IDPH during week 12. One outbreak due to influenza was reported from a long-term care facility during week 12.
ILI: 2.7% (Individuals aged 0 to 4 years had the highest proportion of office visits related to ILI for week 13. This age group accounted for 47% of total ILI visits compared with 46% for week 12)
During week 13, none of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza.
Six influenza-related ICU admissions and no influenza-related ICU deaths were reported to IDPH during week 13. NOTE: Also in report: There were 3 influenza-related ICU admissions and one influenza-related ICU deaths reported to IDPH during week 13.
One outbreak due to influenza was reported from a long-term care facility during week 13.
Re: Illinois 2010-2011 Season: Weeks 40-14 (No New Deaths; Total 19)
Week 14: Sporadic
ILI: 1.8% (Individuals aged 0 to 4 years had the highest proportion of office visits related to ILI for week 14. This age group accounted for 49% of total ILI visits compared with 47% for week 13.)
During week 14, none of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza. WHO/NREVSS2 collaborating laboratories in Illinois tested 11% positive for influenza B.
Four influenza-related ICU admissions and no influenza-related ICU deaths were reported to IDPH during week 14.
One outbreak due to influenza was reported from a long-term care facility during week 14.
Re: Illinois 2010-2011 Season: Weeks 40-15 (One New Deaths; Total 20)
Week 15: Sporadic 1 new adult death; total 20
ILI; 1.3% (majority ages 0-4 years)
During week 15, none of the specimens tested by Illinois Department of Public Health laboratory tested positive for influenza.
No influenza-associated pediatric deaths were reported to IDPH during week 15. Three influenza-related ICU admissions and one influenza-related ICU death were reported to IDPH during week 15.
No outbreaks due to influenza were reported from a long-term care facility during week 15.
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