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USA FluView Reports - Week 48 (2009) - Week 20 (2010)

Re: USA FluView Reports - Week 48 (2009) - Week 14 (2010)

Re: USA FluView Reports - Week 48 (2009) - Week 14 (2010)

2009-2010 Influenza Season Week 15 ending April 17, 2010

All data are preliminary and may change as more reports are received.
Synopsis:

During week 15 (April 11-17, 2010), influenza activity decreased in the U.S.

* 37 (2.1%) 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 were positive for influenza.
* All 20 subtyped influenza A viruses were 2009 influenza A (H1N1).
* The proportion of deaths attributed to pneumonia and influenza (P&I) was at the epidemic threshold.
* No influenza-associated pediatric deaths were reported.
* The proportion of outpatient visits for influenza-like illness (ILI) was 1.1%, which is below the national baseline of 2.3%. All 10 regions reported ILI below region-specific baseline levels.
* No states reported widespread or regional influenza activity. Four states reported local influenza activity. The District of Columbia, Guam, Puerto Rico, and 31 states reported sporadic influenza activity. Fourteen states reported no influenza activity, and the U.S. Virgin Islands and one state did not report.
 
Re: USA FluView Reports - Week 48 (2009) - Week 15 (2010)

Re: USA FluView Reports - Week 48 (2009) - Week 15 (2010)

Six viruses (0.3%) tested showed reduced titers with antiserum produced against A/California/07/2009
 
Re: USA FluView Reports - Week 48 (2009) - Week 15 (2010)

Re: USA FluView Reports - Week 48 (2009) - Week 15 (2010)

2009-2010 Influenza Season Week 16 ending April 24, 2010

All data are preliminary and may change as more reports are received.
Synopsis:

During week 16 (April 18-24, 2010), influenza activity decreased in the U.S.

* 16 (1.2%) 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 were positive for influenza.
* Among eight subtyped influenza A viruses, seven were 2009 influenza A (H1N1) and one was influenza A (H3).
* The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.
* No influenza-associated pediatric deaths were reported.
* The proportion of outpatient visits for influenza-like illness (ILI) was 1.0%, which is below the national baseline of 2.3%. All 10 regions reported ILI below region-specific baseline levels.
* No states reported widespread or regional influenza activity. Two states reported local influenza activity. The District of Columbia, Guam, Puerto Rico, and 30 states reported sporadic influenza activity. Seventeen states reported no influenza activity, and the U.S. Virgin Islands and one state did not report.
http://www.cdc.gov/flu/weekly/
 
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Re: USA FluView Reports - Week 48 (2009) - Week 16 (2010)

Re: USA FluView Reports - Week 48 (2009) - Week 16 (2010)

Synopsis:

During week 17 (April 24 - May 1, 2010), influenza activity decreased in the U.S.

* 16 (0.9%) 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 were positive for influenza.
* All eight subtyped influenza A viruses were 2009 influenza A (H1N1).
* The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.
* One influenza-associated pediatric death was reported and was associated with 2009 influenza A (H1N1) virus infection.
* The proportion of outpatient visits for influenza-like illness (ILI) was 0.7%, which is below the national baseline of 2.3%. All 10 regions reported ILI below region-specific baseline levels.
* No states reported widespread or regional influenza activity. Four states reported local influenza activity. The District of Columbia, Guam, Puerto Rico, and 27 states reported sporadic influenza activity. Nineteen states reported no influenza activity, and the U.S. Virgin Islands did not report.
http://www.cdc.gov/flu/weekly/
 
Last edited by a moderator:
Re: USA FluView Reports - Week 48 (2009) - Week 18 (2010)

Re: USA FluView Reports - Week 48 (2009) - Week 18 (2010)

Week 18:

During week 18 ( May 2 - 8, 2010), influenza activity decreased in the U.S.

* 26 (1.5%) 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 were positive for influenza.
* Among 18 subtyped influenza A viruses, 17 were 2009 influenza A (H1N1) and one was influenza A (H3).
* The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.
* No influenza-associated pediatric deaths were reported.
* The proportion of outpatient visits for influenza-like illness (ILI) was 1.1%, which is below the national baseline of 2.3%. All 10 regions reported ILI below region-specific baseline levels.
* No states reported widespread or regional influenza activity. One state reported local influenza activity. Guam, Puerto Rico, and 24 states reported sporadic influenza activity. The District of Columbia and 25 states reported no influenza activity, and the U.S. Virgin Islands did not report.
http://www.cdc.gov/flu/weekly/
 
Re: USA FluView Reports - Week 48 (2009) - Week 19 (2010)

Re: USA FluView Reports - Week 48 (2009) - Week 19 (2010)

2009-2010 Influenza Season Week 19 ending May 15, 2010

All data are preliminary and may change as more reports are received.
Synopsis:

During week 19 ( May 9 - 15, 2010), influenza activity decreased in the U.S.

* 14 (0.9%) 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 were positive for influenza.
* All four subtyped influenza A viruses were 2009 influenza A (H1N1).
* The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.
* No influenza-associated pediatric deaths were reported.
* The proportion of outpatient visits for influenza-like illness (ILI) was 0.8%, which is below the national baseline of 2.3%. All 10 regions reported ILI below region-specific baseline levels.
* No states reported widespread or regional influenza activity. One state reported local influenza activity. Puerto Rico and 19 states reported sporadic influenza activity. The District of Columbia, Guam, and 30 states reported no influenza activity, and the U.S. Virgin Islands did not report.
 
Last edited by a moderator:
Re: USA FluView Reports - Week 48 (2009) - Week 20 (2010)

Week 20:

During week 20 ( May 16-22, 2010), influenza activity decreased in the U.S.

* Two (0.2%) 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 were positive for influenza.
* Both subtyped influenza A viruses were 2009 influenza A (H1N1).
* The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.
* Three influenza-associated pediatric deaths were reported and were associated with 2009 influenza A (H1N1) virus infection.
* The proportion of outpatient visits for influenza-like illness (ILI) was 1.0%, which is below the national baseline of 2.3%. All 10 regions reported ILI below region-specific baseline levels.
* No states reported widespread or regional influenza activity. One state reported local influenza activity. Guam, Puerto Rico, and 13 states reported sporadic influenza activity. The District of Columbia and 34 states reported no influenza activity, and the U.S. Virgin Islands and two states did not report.

Three influenza-associated pediatric deaths were reported to CDC during week 20 (Georgia and Texas [2]). All three deaths were associated with 2009 influenza A (H1N1) virus infection. The deaths reported during week 20 occurred between September 27, 2009 and March 6, 2010.
http://www.cdc.gov/flu/weekly/
 
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