Mexico's active screwworm cases down 57% since mid-December, ministry says
Mexico's active cases of New World screwworm, a flesh-eating parasite that has kept the U.S.-Mexico border closed to Mexican livestock, have fallen 57% since mid-December, the country's agriculture ministry said on Thursday.
Active cases dropped to 492 as of January 7, from 1,145 registered on December 10, the ministry said.
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