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Epidemiologic Notes and Reports Update: Influenza Activity -- United States

Trends of national influenza activity and morbidity associated with pneumonia and influenza are shown in Figure 1. A total of 16 states indicated the occurrence of widespread or regional outbreaks of influenza-like illness for the week ending March 9, 1985, compared with 21 states and 26 states, respectively, that indicated similar levels for the 2 preceding weeks. Following the trend shown recently by other indices of influenza activity, the percentage of total deaths associated with pneumonia and influenza that were reported from 121 cities declined sharply to 6.2% for the week ending March 9. Reported by Participating physicians of the American Academy of Family Physicians; State and Territorial Epidemiologists; State Laboratory Directors; Other collaborating laboratories; Statistical Svcs Br, Div of Surveillance and Epidemiologic Studies, Epidemiology Program Office, Influenza Br, Div of Viral Diseases, Center for Infectious Diseases, CDC.

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