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FluView 2010-2011: Weeks 40-39

Re: FluView 2010-2011: Weeks 40-12

Re: FluView 2010-2011: Weeks 40-12

Pediatric deaths reported by CDC (89 deaths) now exceed the season totals from 2004-05 (when it became reportable) through 2007-08 (88 deaths). Based on State and some County websites, I have a total of 102 pediatric deaths through Week 12. If we have a resurgence of pH1N1 or if pH1N1 lingers through the summer like it did in 2009, we could approach or exceed the pediatric death total for 2008-09 (133), which was dominated by the newly emerged pH1N1.
 
Re: FluView 2010-2011: Weeks 40-12

Re: FluView 2010-2011: Weeks 40-12

Thank you JimO and Missouriwatcher for those comments.
 
Re: FluView 2010-2011: Weeks 40-12

Re: FluView 2010-2011: Weeks 40-12

almost no pH1N1 in 2008/9

we have still surprisingly many deaths from P+I, see CDC
 
Re: FluView 2010-2011: Weeks 40-12

Re: FluView 2010-2011: Weeks 40-12

If I remember correctly, the CDC extended the 2008-09 season through August 31, 2009.
almost no pH1N1 in 2008/9

we have still surprisingly many deaths from P+I, see CDC
 
Re: FluView 2010-2011: Weeks 40-13

Re: FluView 2010-2011: Weeks 40-13

During week 13 (March 27-April 2, 2011), influenza activity in the United States continued to decrease.

Of the 3,616 specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division, 399 (11.0%) were positive for influenza.
The proportion of deaths attributed to pneumonia and influenza (P&I) has been at or above the epidemic threshold for 10 consecutive weeks.
Two influenza-associated pediatric deaths were reported, bringing the season total to 91. One of these deaths was associated with 2009 influenza A (H1N1) virus, and one was associated with an influenza A virus for which the subtype was not determined.
The proportion of outpatient visits for influenza-like illness (ILI) was 1.6%, which is below the national baseline of 2.5%. All 10 regions reported ILI below region-specific baseline levels. All 50 states and New York City experienced minimal ILI activity and the District of Columbia had insufficient data to calculate an ILI activity level.
The geographic spread of influenza in three states was reported as widespread; 17 states reported regional influenza activity; the District of Columbia and 19 states reported local influenza activity; Puerto Rico and 11 states reported sporadic influenza activity; Guam reported no influenza activity, and the U.S. Virgin Islands did not report.
http://www.cdc.gov/flu/weekly/
 
Re: FluView 2010-2011: Weeks 40-14

Re: FluView 2010-2011: Weeks 40-14

During week 14 (April 3-9, 2011), influenza activity in the United States continued to decrease.

Of the 4,234 specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division, 387 (9.1%) were positive for influenza.
The proportion of deaths attributed to pneumonia and influenza (P&I) has been at or above the epidemic threshold for 11 consecutive weeks.
One influenza-associated pediatric death was reported, bringing the season total to 91. This death was associated with an influenza B virus.
The proportion of outpatient visits for influenza-like illness (ILI) was 1.4%, which is below the national baseline of 2.5%. All 10 regions reported ILI below region-specific baseline levels. Two states experienced low ILI activity; 48 states and New York City experienced minimal ILI activity, and the District of Columbia had insufficient data to calculate an ILI activity levell.
The geographic spread of influenza in two states was reported as widespread; nine states reported regional influenza activity; the District of Columbia and 23 states reported local influenza activity; Guam and 16 states reported sporadic influenza activity; the U.S. Virgin Islands reported no influenza activity, and Puerto Rico did not report.
http://www.cdc.gov/flu/weekly/

NOTE: One pediatric death reported during week 12 was reclassified by the reporting jurisdiction as not due to influenza.
Thirty-four of the 91 deaths reported were associated with influenza B viruses; 23 were associated with 2009 influenza A (H1N1) viruses; 17 deaths reported were associated with influenza A (H3N2) viruses, and 17 were associated with an influenza A virus for which the subtype was not determined.
 
Re: FluView 2010-2011: Weeks 40-15

Re: FluView 2010-2011: Weeks 40-15

During week 15 (April 10-16, 2011), influenza activity in the United States continued to decrease.

Of the 2,972 specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division, 201 (6.8%) were positive for influenza.
The proportion of deaths attributed to pneumonia and influenza (P&I) has been at or above the epidemic threshold for 12 consecutive weeks.
Four influenza-associated pediatric deaths were reported, bringing the season total to 95. One of these deaths was associated with 2009 influenza A (H1N1) virus and three deaths were associated with an influenza B virus.
The proportion of outpatient visits for influenza-like illness (ILI) was 1.3%, which is below the national baseline of 2.5%. All 10 regions reported ILI below region-specific baseline levels. New York City and all 50 states experienced minimal ILI activity, and the District of Columbia had insufficient data to calculate an ILI activity level.
The geographic spread of influenza in five states was reported as regional; 20 states reported local influenza activity; the District of Columbia, Guam, Puerto Rico, and 24 states reported sporadic influenza activity, and the U.S. Virgin Islands and one state reported no influenza activity.
http://www.cdc.gov/flu/weekly/
 
Re: FluView 2010-2011: Weeks 40-16

Re: FluView 2010-2011: Weeks 40-16

During week 16 (April 17-23, 2011), influenza activity in the United States continued to decrease.

Of the 2,072 specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division, 88 (4.3%) were positive for influenza.
The proportion of deaths attributed to pneumonia and influenza (P&I) has been at or above the epidemic threshold for 13 consecutive weeks.
Two influenza-associated pediatric deaths were reported, bringing the season total to 97. Both of these deaths were associated with an influenza B virus.
The proportion of outpatient visits for influenza-like illness (ILI) was 1.3%, which is below the national baseline of 2.5%. Region 2 reported ILI above its region-specific baseline. All 50 states and New York City experienced minimal ILI activity, and the District of Columbia had insufficient data to calculate an ILI activity level.
The geographic spread of influenza in four states was reported as regional; the District of Columbia and 10 states reported local influenza activity; Puerto Rico and 32 states reported sporadic influenza activity, and the U.S. Virgin Islands, Guam, and four states reported no influenza activity.
http://www.cdc.gov/flu/weekly/?source=govdelivery
 
Re: FluView 2010-2011: Weeks 40-17

Re: FluView 2010-2011: Weeks 40-17

During week 17 (April 24-30, 2011), influenza activity in the United States continued to decrease.

Of the 1,901 specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division, 69 (3.6%) were positive for influenza.
The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.
Three influenza-associated pediatric deaths were reported, bringing the season total to 100. One of these deaths was associated with a 2009 influenza A (H1N1) virus, one was associated with an influenza A virus for which the subtype was not determined, and one was associated with an influenza B virus.
The proportion of outpatient visits for influenza-like illness (ILI) was 1.3%, which is below the national baseline of 2.5%. All 10 regions reported ILI below region-specific baselines. All 50 states and New York City experienced minimal ILI activity, and the District of Columbia had insufficient data to calculate an ILI activity level.
The geographic spread of influenza in two states was reported as regional; the District of Columbia and seven states reported local influenza activity; Puerto Rico and 33 states reported sporadic influenza activity, and the U.S. Virgin Islands, Guam, and eight states reported no influenza activity.
http://www.cdc.gov/flu/weekly/
 
Re: FluView 2010-2011: Weeks 40-18

Re: FluView 2010-2011: Weeks 40-18

During week 18 (May 1-7, 2011), influenza activity in the United States continued to decrease.

Of the 1,567 specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division, 29 (1.9%) were positive for influenza.
The proportion of deaths attributed to pneumonia and influenza (P&I) was at the epidemic threshold.
Two influenza-associated pediatric deaths were reported, bringing the season total to 102. One of these deaths was associated with a 2009 influenza A (H1N1) virus and one was associated with an influenza A virus for which the subtype was not determined.
The proportion of outpatient visits for influenza-like illness (ILI) was 1.0%, which is below the national baseline of 2.5%. All 10 regions reported ILI below region-specific baselines. All 50 states and New York City experienced minimal ILI activity, and the District of Columbia had insufficient data to calculate an ILI activity level.
The geographic spread of influenza in one state was reported as regional; two states reported local influenza activity; Puerto Rico, the District of Columbia, and 33 states reported sporadic influenza activity; and the U.S. Virgin Islands, Guam, and 14 states reported no influenza activity.
http://www.cdc.gov/flu/weekly/
 
Re: FluView 2010-2011: Weeks 40-19

Re: FluView 2010-2011: Weeks 40-19

During week 19 (May 8-14, 2011), influenza activity in the United States continued to decrease.

Of the 1,265 specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division, 14 (1.1%) were positive for influenza.
The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.
Three influenza-associated pediatric deaths were reported, bringing the season total to 105. One of these deaths was associated with a 2009 influenza A (H1N1) virus, one was associated with an influenza A (H3) virus, and one was associated with an influenza A virus for which the subtype was not determined.
The proportion of outpatient visits for influenza-like illness (ILI) was 0.9%, which is below the national baseline of 2.5%. All 10 regions reported ILI below region-specific baselines. All 50 states and New York City experienced minimal ILI activity, and the District of Columbia had insufficient data to calculate an ILI activity level.
The geographic spread of influenza in Puerto Rico and 27 states was reported as sporadic, and the District of Columbia, the U.S. Virgin Islands, Guam, and 23 states reported no influenza activity.
http://www.cdc.gov/flu/weekly/
 
Re: FluView 2010-2011: Weeks 40-19

Re: FluView 2010-2011: Weeks 40-19

Regarding week 19:

There is a slight increase in percent positive specimens for Regions: 3 (5.26% influenza B) , 7 (7.41% influenza A), 10 (5% influenza A/B) http://www.cdc.gov/flu/weekly/regions2010-2011/hhswhousmap.htm
ILI for these regions is slightly increased, although remaining below baselines http://www.cdc.gov/flu/weekly/regions2010-2011/hhssenusmap.htm
While still low, Distribute has ED ILI (US composite) with slight increase, with specific increases for Regions 1, 2, 3, 5 http://isdsdistribute.org/
 
Re: FluView 2010-2011: Weeks 40-20

Re: FluView 2010-2011: Weeks 40-20

This is the final FluView surveillance report for the 2010-11 season. The first weekly influenza surveillance report of the 2011-12 season (week 40, ending October 8, 2011) will be published on October 14, 2011.

During week 20 (May 15-21, 2011), influenza activity in the United States remained low.

Of the 1,192 specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division, 9 (0.8%) were positive for influenza.
The proportion of deaths attributed to pneumonia and influenza (P&I) was slightly above the epidemic threshold.
No influenza-associated pediatric deaths were reported. This season, 105 laboratory-confirmed influenza-associated pediatric deaths have been reported to CDC.
The proportion of outpatient visits for influenza-like illness (ILI) was 0.9%, which is below the national baseline of 2.5%. All 10 regions reported ILI below region-specific baselines. New York City and 49 states experienced minimal ILI activity, and the District of Columbia and one state had insufficient data to calculate an ILI activity level.
The geographic spread of influenza in Puerto Rico and 21 states was reported as sporadic, and the District of Columbia, U.S. Virgin Islands, Guam, and 29 states reported no influenza activity.
http://www.cdc.gov/flu/weekly/
 
Re: FluView 2010-2011: Weeks 40-21

Re: FluView 2010-2011: Weeks 40-21

Week 21:
Shows bar charts and graphs of Percent Positive, Pediatric Deaths, P&I and ILI for week 21 and back.
Percent positive for influenza slightly increased. While amount tested decreased, A(2009 H1N1) and A increased and B decreased from previous week.
One influenza-associated pediatric death was reported to CDC during week 21 and was associated with an influenza B virus.
During week 21, 7.1% of all deaths reported through the 122-Cities Mortality Reporting System were due to P&I. This percentage was below the epidemic threshold of 7.2% for week 21.
http://www.cdc.gov/flu/weekly/
 
Re: FluView 2010-2011: Weeks 40-22

Re: FluView 2010-2011: Weeks 40-22

Week 22:
0.48% of the samples tested positive for influenza (A/2009 H1N1 and A not subtyped)
ILI: 0.9%
During week 22, 7.1% of all deaths reported through the 122-Cities Mortality Reporting System were due to P&I. This percentage was at the epidemic threshold of 7.1% for week 22.
http://www.cdc.gov/flu/weekly/

US Weekly Map: Influenza Activity
http://www.cdc.gov/flu/weekly/usmap.htm?source=govdelivery
 
Re: FluView 2010-2011: Weeks 40-23

Re: FluView 2010-2011: Weeks 40-23

Week 23:
Two influenza-associated pediatric deaths were reported to CDC during week 23. Both of these deaths were associated with a 2009 influenza A (H1N1) virus. (108 deaths this season)
ILI: 0.74%
0.32% positive for influenza (A and B)
During week 23, 7.2% of all deaths reported through the 122-Cities Mortality Reporting System were due to P&I. This percentage was above the epidemic threshold of 7.0% for week 23.
http://www.cdc.gov/flu/weekly/?source=govdelivery
 
Re: FluView 2010-2011: Weeks 40-24

Re: FluView 2010-2011: Weeks 40-24

Week 24:
Two influenza-associated pediatric deaths were reported to CDC during week 23. One death was associated with an influenza A (H3) virus and one was associated with an influenza B virus. (110 deaths this season)
ILI: 0.7%
0.77% positive for influenza (all A)
During week 24, 6.6% of all deaths reported through the 122-Cities Mortality Reporting System were due to P&I. This percentage was below the epidemic threshold of 6.9% for week 24.
http://www.cdc.gov/flu/weekly/
 
Re: FluView 2010-2011: Weeks 40-25

Re: FluView 2010-2011: Weeks 40-25

Week 25:
Two influenza-associated pediatric deaths were reported to CDC during week 25. One death was associated with an influenza A (H3) virus and one was associated with an influenza A virus for which the subtype was not determined

During week 25, 6.6% of all deaths reported through the 122-Cities Mortality Reporting System were due to P&I. This percentage was below the epidemic threshold of 6.8% for week 25.

0.22% positive for influenza (all B)
ILI: 1%
http://www.cdc.gov/flu/weekly/?source=govdelivery
 
Re: FluView 2010-2011: Weeks 40-26

Re: FluView 2010-2011: Weeks 40-26

Week 26:
No influenza-associated pediatric deaths were reported.

During week 26, 6.8% of all deaths reported through the 122-Cities Mortality Reporting System were due to P&I. This percentage was at the epidemic threshold of 6.8% for week 26.

0.17% positive for influenza (A)

Nationwide during week 26, 0.7% of patient visits reported through the U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet) were due to influenza-like illness (ILI). This percentage is below the national baseline of 2.5%.
http://www.cdc.gov/flu/weekly/
 
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