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Human streptococcal disease syndrome compared with observations in chimpanzees. II. Immunologic responses to induced pharyngitis and the effect of treatment.

Few reports describe clinical, bacteriologic, and immunologic investigations of streptococcal infection in chimpanzees, monkeys, or baboons [1-8]. The rarity of these experiments, particularly with the anthropoid apes, is probably due to the special requirements for facilities and handling, as well as the expense and difficulty in procuring these animals. There is some evidence that the response of chimpanzees to streptococcal infection is similar to that of humans [1]. The close phylogenic relationship suggests that the chimpanzee may be a valid model for the study of host response in human streptococcal disease. This report describes the preliminary observations in a continuing series of investigations of streptococcal infection and its nonsuppurative sequelae in chimpanzees. Two questions were considered: (7) are the immunologic responses following uncomplicated pharyngitis in chimpanzees comparable to those observed in humans and (2) what is the effect of adequate treatment on the development of these responses?