Measles at an International Gymnastics Competition--Indiana, 1991

On September 7, 1991, the Indiana State Department of Health (ISDH) was notified of three suspected measles cases among athletes from New Zealand (NZ) participating in an international gymnastics competition September 6-15 in Indianapolis (Marion County). Among those potentially at risk for measles were approximately 700 athletes and 1200 coaches, trainers, and managers from 51 countries; an estimated 2500 volunteers and staff; international media, families, and employees; and approximately 60,000 spectators attending the competition. This report summarizes the epidemiologic investigation of these cases.