Seroprevalence of Pandemic Influenza Viruses, New York, New York, USA, 2004
Isaac B. Weisfuse, Tshidi Tsibane, Kevin J. Konty , Joseph R. Egger1, Elizabeth Needham Waddell, Saad Rahmat, Emily Harris, Donald R. Olson, and Christopher F. Basler
Author affiliations: New York City Department of Health and Mental Hygiene, New York, New York, USA (I.B. Weisfuse, K.J. Konty, J.R. Egger, E.N. Wadell, D.R. Olson); Mount Sinai School of Medicine, New York (T. Tsibane, S. Rahmat, E. Harris, C.F. Basler); and International Society for Disease Surveillance, New York, (D.R. Olson)
Seroprevalence of cross-reactive antibodies to the 1918, 1957, 1968, and 2009 pandemic influenza viruses among persons >23 years of age, New York, New York, 2004. LOESS (locally weighted scatterplot smoothing) curves represent the estimated prevalence of hemagglutination-inhibition antibody titers of >40 (positive titers) by year of birth.
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