Adverse reactions following immunization with MMR vaccine in XXXX at selected provinces of Iran.

@entity1 @entity410 @entity8174 @entity75 @entity2462 @entity221 @entity2021
BACKGROUND: Several adverse events following immunization (AEFI) have been attributed to immunization with live attenuated measles, mumps, and @entity2462 (MMR) vaccines. The MMR vaccine was introduced into the routine @entity1 immunization schedule in 2003, followed by a second dose of vaccine at school-entry for @entity1 4 to 6 years of age. The objective of this study was to characterize adverse reactions following MMR vaccination in Iran. METHODS: @entity1 who received the MMR vaccine and resided in five selected provinces of Iran were examined weekly for four weeks to detect well-known AEFIs that included: @entity8174 , @entity221 and @entity410 , @entity410 without @entity221 , @entity75 , and anaphylactic reactions. Incidence of AEFIs were calculated and compared among recipients in both age groups. RESULTS: During the follow-up period, trained providers reported 792 AEFIs. @entity8174 was the most frequent event occurring in 1.8% of recipients. Of 14,109 @entity1 vaccinated at 12 months of age the following AEFIs occurred: @entity8174 (147), @entity221 and @entity410 (8), @entity410 (7), @entity75 (1), and anaphylactic reactions (1). Of 29,338 @entity1 vaccinated at 4 to 6 years of age, @entity8174 , @entity221 and @entity410 , @entity75 , and @entity2021 occurred in 626, 5, 1, and 1 @entity1 , respectively; no @entity410 without @entity221 were reported in this age group. CONCLUSION: @entity8174 is the most frequent AEFI among MMR vaccine recipients in Iran. Incidence rates of AEFIs following MMR vaccination in Iran are similar to rates of AEFIs reported in other studies.
