A careful search of the literature has failed to reveal a case of rat-bite fever in an infant as young as the one observed by us. For this reason it is felt desirable to record this instance of an infant who was bitten by a rat at the age of 11 days and in whom the incubation period and course of the disease could be observed in detail. The youngest child previously reported, an infant aged 3 months, was described by Sanders1 in 1922. Bayne-Jones2 collected 75 cases occurring in the United States from 1839 to 1930. Only 9 of the patients were under 2 years of age.
REPORT OF CASE
C. B., an infant Negress aged 11 days, entered the hospital on April 19, 1940 about two hours after having been bitten by a rat while sleeping in her crib. Physical examination showed nothing abnormal