Side effects of the group a have meningitis vaccine include fever malaise rash, difficulty breathing, and shock. Group a has a meningitis vaccine to prevent epidemic meningitis, the vaccine may have some side effects, but most patients are relatively mild, a very small number of patients may have a serious reaction. The main common side effects of the group a meningitis vaccine are fever and rash. Symptoms will disappear after 1 to 2 days in most patients. Some people may experience redness, swelling and pain at the injection site, which usually disappears after 3~5 days. Avoid getting the wound wet to prevent infection. A small number of patients may experience serious side effects, such as respiratory distress, shock, etc., which require timely medical treatment.