Menafrivac is a brand name for a vaccine used to protect against meningitis A. Synonyms for Menafrivac might include "meningococcal A vaccine", "Meningococcus group A vaccine" or simply "A meningococcal vaccine". These alternative terms might be used by healthcare professionals or pharmacists looking to discuss the vaccine with patients or other medical staff. It's important to note that although Menafrivac is a trademarked name, the vaccine is essentially the same as other meningococcal A vaccines on the market and provides the same level of protection against the disease.