Influenza Activity--United States, 1999-2000 Season

Article Abstract:

Influenza was widespread but did not reach excessive levels between October 3 and November 6, 1999. Nationwide, only 1% of all patient visits to doctors reporting to the CDC were for influenza-like illness (ILI). Regionally, this percentage varied from 0 to 5%. However, despite low levels of influenza, 30 states reported cases and outbreaks occurred at four long-term care-facilities. Most cases were caused by influenza type A(H3N2) viruses. During the week ending November 6, 7.4% of the deaths in 122 US cities reporting to the CDC were caused by pneumonia and influenza.

Statistical Data Included

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Update: Influenza Activity-United States, 1998-99 Season

Article Abstract:

The 1999 flu season has been relatively mild, according to CDC. Most cases of influenza, based on laboratory analysis of specimens, were caused by influenza A virus. The vaccine currently in use adequately protects against the strains of virus that predominated in 1999. Health care workers, the ill and elderly, and other high-risk people should be vaccinated against influenza.

Reports, United States. Centers for Disease Control and Prevention

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