Which vaccine should be administered as supplemental measles vaccination at 7 months of age?

The correct vaccine to administer as supplemental measles vaccination at 7 months of age is the measles-rubella (MR) vaccine. This vaccine is specifically designed to help prevent both measles and rubella, making it a suitable choice for supplemental immunization during early childhood.

At 7 months, infants may not yet have received their first dose of the measles-containing vaccine in the standard immunization schedule. The MR vaccine provides early protection against both diseases, particularly in areas where there is a higher risk of outbreaks or exposure.

The MMR vaccine, while also covering measles, mumps, and rubella, is typically given later in the schedule, starting at 12 months of age. Therefore, it is not the recommended choice for supplemental vaccination at this early stage. The AMV, which refers to a combined vaccine, may not be widely recognized or standard for measles prevention specifically for this age group.

In summary, the MR vaccine is the appropriate option to provide supplemental measles vaccination at 7 months of age, bridging the gap before the standard measles-containing vaccine schedule begins.