| Literature DB >> 9072677 |
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Abstract
Influenza activity in the United States has continued to decline since mid-January 1997. The predominant viruses have been influenza type A (H3N2), although the proportion of influenza B isolates has increased since the week ending January 18. This report summarizes influenza activity in the United States from September 29, 1996, through the week ending February 15, 1997.Entities:
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Year: 1997 PMID： 9072677
Source DB: PubMed Journal: MMWR Morb Mortal Wkly Rep ISSN： 0149-2195 Impact factor: 17.586