Epidemiological Studies of Epidemic Haemorrhagic Fever

Abstract

Tamura reported that there has fairly long been existing epidemic haemorrhagic fever (EHF) in Osaka City in the form of an endemic and there is likely to be a great possibility of its spreading to other parts of this country. This motivated the author to make public his experience with this disease in northern and eastern Manchuria at the time when he was a member of the special medical team of the then Japanese Imperial Army.
Since 1938, Japanese army had begun stricken by a hitherto unknow disease in northern and eastern Manchuria. At an outbreak in Songo and Sanchinfu, northern Manchuria, in winter of 1941, the number of patients including soldiers and villagers counted as many as 500. Mortality rate of this epidemic was. aboto. the recuthout 15%. Later, in 1942, the special medical team, before mentioned, was set up and dispatched epidemic areas. The discovery of EHF was thus brought about by them in that year. The firstognition of its viral and infectious nature was made through an experiment carried out by the ar