Inj site burning &/or stinging of short duration. Occasional: Fever; rash. Rare: mild local reactions eg, erythema, induration & tenderness; sore throat, malaise, atypical measles, syncope, irritability; parotitis, nausea, vomiting, diarrhea; regional lymphadenopathy, thrombocytopenia, purpura; allergic reactions eg, inj site wheal & flare, anaphylaxis & anaphylactoid reactions as well as related phenomena eg, angioneurotic edema (including peripheral or facial edema) & bronchial spasm, urticaria in individuals w/ or w/o an allergic history; arthralgia &/or arthritis (usually transient & rarely chronic), myalgia; febrile convulsions in childn, afebrile convulsions or seizures, headache, dizziness, paresthesia, polyneuritis, polyneuropathy, Guillain-Barre syndrome, ataxia, MIBE. Encephalitis/encephalopathy have been reported. Pneumonitis, cough, rhinitis; erythema multiforme, Stevens-Johnson syndrome, inj site vesiculation, swelling; forms of optic neuritis including retrobulbar neuritis, papillitis & retinitis; ocular palsies, otitis media, nerve deafness, conjunctivitis; orchitis; death from various & in some cases, unknown causes has been reported rarely following vaccination. Reports of subacute sclerosing panencephalitis in childn who did not have history of natural measles but did receive measles vaccine. Panniculitis; arthralgia &/or arthritis (usually transient & rarely chronic) & polyneuritis; reactions in joints; rarely encephalitis & encephalopathy.