This article describes the use of the mosquito-borne Sindbis virus to kill cancer cells in lab dishes and mice. It would be interesting to determine whether the human population of the Egyptian town of Sindbis exhibits a reduced incidence of certain cancers. Perhaps large-scale efforts directed toward elimination of the mosquito in populated areas are reducing beneficial, insectborne inoculations worldwide.

John T. Petrick
New Port Richey, Fla