Which vaccine is administered orally in children?

The Rotavirus vaccine is administered orally in children, making it the correct answer. This vaccine is crucial as it protects against rotavirus infections, which can lead to severe diarrhea and dehydration in young children. The oral administration method is particularly advantageous for infants and toddlers, as it is less invasive than injections, allowing for easier delivery and acceptance by young patients.

In contrast, the MMR vaccine, which protects against measles, mumps, and rubella, is given via injection. The live influenza vaccine is also administered through nasal spray rather than orally, and the meningococcal conjugate vaccine requires an injection as well. Understanding the routes of administration for these vaccines is essential in pediatric care and vaccination schedules.