Más sobre la epidemia de gripe A H1N1

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MedAlert

2009-2010 Influenza Season; influenza activity decreased during wk 14

All data are preliminary and may change as more reports are received.
Synopsis
During week 14 (April 4-10, 2010), influenza activity decreased in the U.S.

• 52 (2.7%) 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 34 subtyped influenza A viruses, 33 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.

• Three influenza-associated pediatric deaths were reported. One was associated with 2009 influenza A (H1N1) virus infection, one was associated with an influenza A virus for which the subtype was undetermined, and one death was associated with a seasonal influenza A (H1) virus infection, but occurred during the 2008-09 season.

• The proportion of outpatient visits for influenza-like illness (ILI) was 0.9%, which is below the national baseline of 2.3%. All 10 regions reported ILI below region-specific baseline levels.

• No states reported widespread influenza activity. Two states reported regional influenza activity. Puerto Rico and one state reported local influenza activity. The District of Columbia, Guam and 37 states reported sporadic influenza activity. The U.S. Virgin Islands and nine states reported no influenza activity, and one state did not report.