An investigation of the epidemiology of jungle yellow fever was undertaken in the vicinity of Passos, Minas Gerais, in the period 1945 to 1948 and has been reported by Laemmert, Hughes and Causey (1). This region was thought to be particularly favorable for such a study because it had been the scene of jungle yellow fever between 1935 and 1938 and appeared to have been in the path of another epidemic which invaded the neighboring state of Goiaz in 1944.
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Causey et al. (1949) studied this question.