New World Screwworm Likely to Appear in US This Summer, Says NCBA

It's no longer a question of whether we'll see a return of New World screwworm in the U.S.—but a matter of when. That's according to Colin Woodall, CEO of the National Cattlemen's Beef Association (NCBA)

He believes the screwworm, a parasitic pest, is likely to cross the southern border of the United States later this summer.

The New World screwworm is a fly that has a gory way of harming cattle. The female flies lay their eggs in open wounds or body orifices and when the larvae hatch, they burrow deep into the skin like a screw driving into wood. These NWS maggots feed on cattle's tissue, causing much larger wounds as they go...

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