Seroincidence of influenza among HIV-infected and HIV-uninfected men during the 2009 H1N1 influenza pandemic, Bangkok, Thailand

Academic Article


  • © The Author 2014. Among 368 Thai men who have sex with men with paired serum samples collected before and during the 2009 H1N1 influenza pandemic, we determined influenza A (H1N1) pdm09 seroconversion rates (≥4-fold rise in antibody titers by hemagglutination inhibition or microneutralization assays). Overall, 66 of 232 (28%) participants seroconverted after the first year of A(H1N1)pdm09 activity, and 83 of 234 (35%) participants seroconverted after the second year. Influenza A(H1N1)pdm09 seroconversion did not differ between human immunodeficiency virus (HIV)-infected (55 of 2157 [35%]) and HIV-uninfected (71 of 2211 [34%]) participants (P = .78). Influenza A(H1N1)pdm09 seroconversion occurred in approximately one third of our Thai study population and was similar among HIV-infected and HIV-uninfected participants.
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  • Garg S; Olsen SJ; Fernandez S; Muangchana C; Rungrojcharoenkit K; Prapasiri P; Katz JM; Curlin ME; Gibbons RV; Holtz TH
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