. The American journal of tropical medicine. 171424 282630312224414815 320 Tertian Estivo- autum- nal 03 2 8 10 6 2 7 8 10 11 5 72 The quartan parasite was found 18 times in Haytians and 5 times in Jamaicans. view of the employment of these groups during the year. Mostof the Haytian laborers were left unemployed when the caneseason ended about the first of October. Several thousand wentback to Hayti, but a large number remained wandering aboutmostly in or near the towns, where they were less exposed toanopheles. During the following four months, October to January, theJamaican l


. The American journal of tropical medicine. 171424 282630312224414815 320 Tertian Estivo- autum- nal 03 2 8 10 6 2 7 8 10 11 5 72 The quartan parasite was found 18 times in Haytians and 5 times in Jamaicans. view of the employment of these groups during the year. Mostof the Haytian laborers were left unemployed when the caneseason ended about the first of October. Several thousand wentback to Hayti, but a large number remained wandering aboutmostly in or near the towns, where they were less exposed toanopheles. During the following four months, October to January, theJamaican laborers were largely employed in construction andnew development work, such as railroad building, pipe line MALAEIA IN EASTERN CUBA 385 construction, wood cutting. This involved considerable ex-posure not only to mosquitoes but to such debilitating influencesas poor food and insufficient protection against rain and wind. Late in January cutting and grinding of sugar cane was startedagain. About that time five thousand or more Haytians came. Fig. 2 over from Hayti. They all went out in the fields to cut the same time large numbers of Jamaicans were withdrawnfrom the outlying districts to be employed in transportationand other work in which they were much less exposed. The result is plainly evident in figures 2 and 3 which show theHaytian and the Jamaican malaria rates during the year. THE AMERICAN JOUBNAL OF TROPICA!, MEDICINE, VOL. I, NO. 6 386 N. NEDERGAARD Table 3 gives a suininary of the year as a whole. It will beseen that the percentage of infection is very much lower for theCuban patients. This may be accounted for by the fact thatmost of the Cubans Hved in the towns and therefore were largelycared for in the cHnics and at their homes, thus leaving a greater


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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttropica, bookyear1921