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Flu is now widespread in 43 US states, CDC reports

BMJ 2015; 350 doi: https://doi.org/10.1136/bmj.h86 (Published 07 January 2015) Cite this as: BMJ 2015;350:h86
  1. Michael McCarthy
  1. 1Seattle

Widespread influenza activity had been reported by 43 states as of 27 December, the US Centers for Disease Control and Prevention (CDC) reported in its weekly update on 5 January. Influenza A virus (H3N2) was the most common virus detected, accounting for 95% of influenza, the CDC said, noting that this flu season may prove to be more severe.

The CDC report said, “In the past, H3N2 predominant seasons have been associated with more severe illness and higher mortality, especially in older people and young children, relative to H1N1 or B predominant seasons.”1 From 1976 to 2007, for example, an average of about 29 000 people died …

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