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Dr. Vammen has contributed, from Denmark, an excellent study on the type distribution in the pneumococcic pneumonias. The occurrence of various pneumococcus types as reported by investigators in Denmark, England and elsewhere and in America, where the intensive study of this subject originated, are compared in tables. The distribution of the types is similar in various places excepting for a strikingly greater incidence of type II in Denmark and England than in New York and Boston. There is an English translation of the excellent summary and numerous comprehensive tables, so that this book will be of value to workers unfamiliar with the Danish language. Vammen has added several additional new types to those of Cooper. They have been segregated from the x group or by more refined differentiation from some of the older types, notably IX and X. Vammen pleads for the establishment of a central international source for the
Pneumokoktypernes forekomst i Danmark. JAMA. 1940;115(17):1480. doi:10.1001/jama.1940.02810430070034
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