Provisional figures on participation in the National Immunisation Programme According to RIVM’s registration system, at least 90% of babies have been vaccinated against mumps, measles and rubella (MMR).
New RIVM-method used to detect influenza A (H7H9) population immunity The level of immunity to the recently circulating H7N9 influenza virus in an urban and rural population in Vietnam is very low, according to the first population level study to examine human immuni