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The Scorpion Problem in Ribeirão Preto, São Paulo, Brazil. Notes on Epidemiology and Prophylaxis

A survey of the city of Ribeirão Preto in the State of São Paulo, Brazil, revealed four species of scorpion: Tityus serrulatus, Tityus bahiensis, Bothriurus bonariensis, and Bothriurus magalhaensis. The first species was predominant, and because of its urban and domestic habits, was responsible for the majority of accidents to human beings through scorpion stings, of which 1,331 were reported over a period of 7 years, with 8 deaths in small children.

Ortho BHC, and DDT in solution were used in an experimental eradication campaign and both were effective. BHC was more rapidly lethal, but the period of observation was too short to permit an evaluation of the comparative duration of residual toxicity of the two poisons.