Studies of the Epidemiology of Staphylococcal Infection

STAPHYLOCOCCAL infections acquired by patients in the Johns Hopkins Hospital have been surveyed since 1957. Observations during this period have been almost continuous and were interrupted only for short periods because of changes in personnel. In the first year of the survey it appeared that there might be a seasonal variation in at least some types of staphylococcal infections.1 The period for which meaningful data had been collected, however, was initially too brief to be interpreted. In 1959 the greatest number of staphylococcal infections developed during the months of January and February; this variation in rate was due entirely to . . .