Surveillance for Influenza during the 2009 Influenza A (H1N1) Pandemic-United States, April 2009-March 2010
Open Access
- 13 December 2010
- journal article
- research article
- Published by Oxford University Press (OUP) in Clinical Infectious Diseases
- Vol. 52 (Supplement), S27-S35
- https://doi.org/10.1093/cid/ciq009
Abstract
The emergence in April 2009 and subsequent spread of the 2009 pandemic influenza A (H1N1) virus resulted in the first pandemic of the 21st century. This historic event was associated with unusual patterns of influenza activity in terms of the timing and persons affected in the United States throughout the summer and fall months of 2009 and the winter of 2010. The US Influenza Surveillance System identified 2 distinct waves of pandemic influenza H1N1 activity—the first peaking in June 2009, followed by a second peak in October 2009. All influenza surveillance components showed levels of influenza activity above that typically seen during late summer and early fall. During this period, influenza activity reached its highest level during the week ending 24 October 2009. This report summarizes US influenza surveillance data from 12 April 2009 through 27 March 2010.Keywords
This publication has 5 references indexed in Scilit:
- Cross-Reactive Antibody Responses to the 2009 Pandemic H1N1 Influenza VirusNew England Journal of Medicine, 2009
- The Signature Features of Influenza Pandemics — Implications for PolicyNew England Journal of Medicine, 2009
- Emergence of a Novel Swine-Origin Influenza A (H1N1) Virus in HumansNew England Journal of Medicine, 2009
- Influenza-Associated Deaths among Children in the United States, 2003–2004New England Journal of Medicine, 2005
- Mortality Associated With Influenza and Respiratory Syncytial Virus in the United StatesJAMA, 2003