Immunogenicity and tolerability of yellow fever vaccination in 23 French HIV-infected patients.

Background: Vaccination of asymptomatic human immunodeficiency virus (HIV)-infected patients with a CD4 cell count ≥ 200/mm³ is strongly suggested prior to travel to a region where yellow fever (YF) is endemic. However, few data describing YF vaccination in such patients are available.

Methods: In this retrospective observational study of 23 HIV-infected patients, YF antibody titers, CD4 cell counts, and viral loads were measured before and after vaccination.