Word: respira
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Dates: during 1927-1927
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Doctors include infantile paralysis (poliomyelitis) among the respira tory diseases. So far as is known, the disease only occurs in man and he is the sole source of infection (monkeys have been infected in clinics). Transmission may occur through insects and other animal carriers, but there is no definite evidence. No organism has been isolated which has been proved to be the cause of the disease...
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