What Are the Risks Associated With the Meningococcal Vaccine?
The meningococcal vaccine, like all vaccines, has the potential to cause serious problems, such as severe allergic reactions. The risk of the vaccine causing serious harm or death is extremely small. Mild problems associated with the vaccine include redness or pain at the injection site or a fever. Rarely, people who have received the MCV4 vaccine have developed a serious nervous system disorder called Guillain-Barre syndrome.