<qa>  What is the prevalence of vitamin A deficiency among pregnant women in Bangladesh?In our recent study MotherSGift Project, funded by Thrasher Research Fund, we have detected that maternal influenza vaccination can reduce influenza illness substantially in young infants up to 6 months of age in Bangladesh Zaman et al., 2008. On the other hand the prevalence of vitamin A deficiency among pregnant women in Bangladesh as well as in other developing countries is very high. More than half of the pregnant women in Bangladesh consume less vitamin A than the recommended dietary allowance and have low vitamin A status serum retinol 105 μmolL with approximately one-fifth of them classified as deficient serum retinol 070 μmolL Ahmed et al., 2003; Lee et al., 2008. Nonetheless, there is conclusive scientific evidence suggesting several aspects of both innate and adaptive immunity are compromised by clinical and subclinical vitamin A deficiency Stephensen, 2001. In another study, we observed a significant positive association between primary yellow fever viral vaccine specific lymphocyte blastogenesis antibody responses and body vitamin A store Ahmad et al., 2008. Thus in view of the potential immune regulatory roles of vitamin A, it is of interest to investigate whether maternal vitamin A supplementation along with influenza vaccination could be used as public health intervention strategy to combat both influenza infection and vitamin A deficiency simultaneously among mothers and young infants in developing countries. 