The authors of some recent textbooks on children's diseases have failed to appreciate the importance of differentiating types of pneumonia in infants and children in accordance with the newer (Cooper1) classification of the strains of pneumococci. This may be due in part to the fact that the distribution of types according to the age of the patient has as yet not been recorded. Nemir2 alone separated her cases according to the type of pneumococcus and whether the child was younger or older than 2 years.
A review of the literature on the occurrence of pneumococcic infections in children prior to the classification of types by Cooper is found in the paper by Plummer, Raia and Shultz.3 This study on the first thirteen types, as well as unreported studies of our own at the Harlem Hospital, was the stimulus for segregation of the additional types up to and
BULLOWA JGM, GREENBAUM E. PNEUMOCOCCIC PNEUMONIA IN INFANTS AND IN CHILDREN. Am J Dis Child. 1937;53(1_PART_I):22-31. doi:10.1001/archpedi.1937.04140070031002