Science: Antrycide

Britain may build a new African empire because of a discovery announced last week: a new synthetic drug called Antrycide, to cure and prevent trypanosomiasis (related to sleeping sickness) in cattle. The drug will be used in a vast area of Africa, larger than the U.S., where profitable ranching has long been impossible because of tsetse flies which carry the wiggly protozoan parasite of trypanosomiasis to domestic cattle, horses and hogs.

Fighting trypanosomiasis by attacking the flies with insecticides has never been wholly effective. Some flies always survived and quickly re-established the fly population. As a result, the whole great African area...

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