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Article
August 30, 1976

Epidemic Streptococcal Sore Throat Following a Community Picnic

Author Affiliations

From the Bacterial Diseases Division, Bureau of Epidemiology, Center for Disease Control, US Department of Health, Education, and Welfare, Atlanta, and the Bureau of State Services, Center for Disease Control, US Department of Health, Education, and Welfare, Atlanta (Mr Kay).

JAMA. 1976;236(9):1039-1041. doi:10.1001/jama.1976.03270100039025
Abstract

Following a picnic, nearly half of the persons who attended became ill. Sixty-three of 139 throat cultures were positive for group A β-hemolytic streptococci. Forty-seven of the positive cultures were available for typing, 34 of which harbored the epidemic strain, group A β-hemolytic Streptococcus type T-3/13/B3264. This contrasted with two of 204 controls who had not attended, but harbored the epidemic strain. Food preferences and illness rates implicated the potato salad, and from it the epidemic strain was isolated. The attack rate and case-to-infection ratio among those who attended the picnic was significantly greater for persons over 10 years of age. Prompt institution of chemoprophylaxis could possibly have prevented at least 50% of the cases.

(JAMA 236:1039-1041, 1976)

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