Does the effect of vitamin A supplements depend on vaccination status? An observational study from Guinea-Bissau.

ABSTRACT: Objective Vitamin A supplementation (VAS) is estimated to reduce all-cause mortality by 24%. Previous studies indicate that the effect of VAS may vary with vaccination status. The authors evaluated the effect of VAS provided in campaigns on child survival overall and by sex and vaccination status at the time of supplementation. Design Observational cohort study. Setting and participants The study was conducted in the urban study area of the Bandim Health Project in Guinea-Bissau. The authors documented participation or non-participation in two national vitamin A campaigns in December 2007 and July 2008 for children between 6 and 35 months of age. Vaccination status was ascertained by inspection of vaccination cards. All children were followed prospectively. Outcome measures Mortality ra

SUBMITTER: Fisker AB 

PROVIDER: S-EPMC3278485 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature