This article has no abstract; the first 100 words appear below.
The undifferentiated respiratory diseases, the febrile catarrhs (acute respiratory disease, exudative nonstreptococcal pharyngitis, primary atypical pneumonias)¹,² and the afebrile common colds continue as unsolved omnipresent sources of human distress. About two years ago our group at the National Microbiological Institute and a group at Johns Hopkins University School of Hygiene embarked on collaborative efforts to study these ailments. The general, quite elastic plan was to observe them in a concerted manner — to study them simultaneously from clinical, epidemiologic and laboratory standpoints. A particularly important and specific part of the plan, however, was to utilize tissue-culture technics providing multi-purpose new . . .
*From the Department of Health, Education and Welfare, Public Health Service, National Institutes of Health, National Microbiological Institute, and the Department of Microbiology, School of Hygiene and Public Health, Johns Hopkins University.
Supported in part by grant from the Division of Research Grants, United States Public Health Service.
† Medical director, United States Public Health Service; chief, Virus and Rickettsial Diseases Section, Laboratory of Infectious Diseases, National Microbiological Institute; assistant professor of infectious diseases in pediatrics, Georgetown University School of Medicine.
‡ Senior assistant surgeon, United States Public Health Service, Laboratory of Infectious Diseases, National Microbiological Institute.
§ Associate professor of microbiology, Johns Hopkins University School of Medicine.
¶ Senior assistant surgeon, Laboratory of Clinical Investigation, Clinical Center, National Microbiological Institute, National Institutes of Health; assistant clinical professor of pediatrics, Georgetown University, School of Medicine.
∥ Medical director, United States Public Health Service; chief, Epidemiology Section, National Microbiological Institute, Laboratory of Infectious Diseases.