One more punch

IVERMECTIN, a medicine employed for the treatment of nematode-worm infections, has a side-effect. It has been known since the 1980s that the drug kills arthropods (ticks, mites, insects and so on) foolish enough to bite someone treated with it. That has led some researchers to wonder if it might be deployed deliberately against the mosquitoes which transmit malaria. Preliminary studies suggested so. Mosquitoes do, indeed, get poisoned when they bite people who have taken the drug. Moreover, even...