Skip to main content
. 2016 Jan 22;11(1):e0147271. doi: 10.1371/journal.pone.0147271

Fig 1. Seropositivity of health personnel to H1N1pdm2009 exposure during the pandemic outbreak in Chile.

Fig 1

Post pandemic antibody titer of high risk (ER) and low risk health personnel (OR) at the PUC Clinical Hospital in Santiago of Chile, against (A) A/California/07/2009 H1N1pdm, (B) A/Brisbane/10/2007 H3N2 strains and (C) A/Brisbane/59/2007 seasonal H1N1. Serum samples were obtained at least 3 weeks after the pandemic period in Chile (after epidemiological week 33) and before H1N1pdm2009 vaccination (November to March of 2010). Grey dots depict individual HI titer, and black lines represent the mean titer for each group. Discontinuos grey line, indicates the assay threshold of detection set to 10 HIU. Statistical significance was determined by an Unpaired t-test with Welch's correction (* p 0.0405).