In fact, he says, the study of sewage and river water samples from Japan demonstrates the relative safety of the vaccine - derived virus: Although virulent vaccine - derived viruses in the environment «are actually a pretty common event,» he says, «we don't see outbreaks» of vaccine - caused disease, even in areas where vaccination coverage is relatively low. (sciencemag.org)
Data concerning the safety of this vaccine during breastfeeding is not available. (cdc.gov)
Data concerning the safety of this vaccine for breastfeeding infants is not available. (cdc.gov)