Get scientific facts behind Zika virus

To the editor:

The unproven but much-publicized cause of the surge of birth deformities in Brazil by the mosquito-borne Zika virus is disputed by medical evidence, in an article in the Wall Street Journal of Feb. 16. It suggests that the incidence of microcephaly in Brazil points strongly to the widely-sprayed mosquito-destroying insecticide, Pyriproxyphen.

Let's hope that immediate and responsible attention to scientific facts will curtail the proliferation of this tragic crisis.

Ruth Heuberger, Great Barrington