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The Cause of "Flood Fever"
Dr. R. Kawamura, professor in the Niigata Imperial Medical College, has published the results of his long study of the infectious disease tsutsugamushi, which is endemic in the villages on the river Shinano in the Niigata Prefecture. Years ago von Bealtz, then German professor of the medical department of the Tokyo Imperial University, first proved it to be an independent disease and named it "flood fever," though the name tsutsugamushi or akamushi disease had been popular among the people. Japanese investigators have tried to discover the cause since then. Dr. Kawamura has at last demonstrated Rickettsia prowazeki in the red mite and in certain tissues of experimental animals with the aid of his assistant Dr. Imagawa. It seems that there is still a gap before the connection is established between this newly discovered Rickettsia, the causative agent of tsutsugamushi, and that of typhus fever, because
JAPAN. JAMA. 1931;96(18):1524-1525. doi:10.1001/jama.1931.02720440072025