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Article: Update: influenza activity--United States and Worldwide, May 21-September 9, 2006.
- Article from:
- MMWR. Morbidity and Mortality Weekly Report
- Article date:
- September 22, 2006
- Author:
CopyrightCOPYRIGHT 2006 U.S. Government Printing Office. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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During May 21-September 9, 2006, influenza A(H3), influenza A(H1), and influenza B viruses cocirculated worldwide and were identified sporadically in North America. This report summarizes influenza activity in the United States and worldwide since the last MMWR update (1).
United States
In the United States, CDC uses seven systems for national influenza surveillance (2), four of which operate year-round: 1) the World Health Organization (WHO) and the National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratory systems; 2) the U.S. Influenza Sentinel Provider Surveillance System; 3) the 122 Cities Mortality Reporting ...