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. 2008 Jun 28;56(7):1281–1285. doi: 10.1111/j.1532-5415.2008.01775.x

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© 2008, Copyright the Authors. Journal compilation © 2008, The American Geriatrics Society

This article is being made freely available through PubMed Central as part of the COVID-19 public health emergency response. It can be used for unrestricted research re-use and analysis in any form or by any means with acknowledgement of the original source, for the duration of the public health emergency.

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Number of viral infections diagnosed serologically during the 3‐year period. The individual nursing homes which participated in each year are shown on the horizontal axis with the number of individuals tested indicated. Each type of viral infection is expressed by a different shade in the bar graph. Some nursing homes participated in more than 1 year.RSV = respiratory syncytial virus; Flu A = influenza A virus; Flu B = influenza B virus; HMPV = human metapneumovirus; OC43 = coronavirus OC43; 229E = coronavirus 229E; PIV‐3 = parainfluenza virus serotype 3; PIV‐1 = parainfluenza virus serotype 1.