The screwworm larva has mandibles that protrude from the mouth
Scott Camazine/Alay
Countries across the Americas have spent billions trying to control the New World hookworm since the flesh-eating parasite devastated cattle in the US in the 1950s.
But a recent surge in infections in Central America suggests containment efforts may fail, putting the region’s food supply and tens of billions of dollars worth of livestock at risk.
What is a screw?
New World worm (Cochliomyia hominivorax) It is an endemic insect of South America…
