Mexico reports second screwworm case in two days

MEXICAN authorities reported a case of the New World screwworm parasite late on Thursday, the second case reported in two days as Mexico works to contain an outbreak that has kept the US-Mexico border closed to Mexican livestock.

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The parasite was detected and treated in a goat in the State of Mexico, which borders capital Mexico City, the ministry said, adding that the 20 other animals at the site tested negative and were given preventive treatment.

On Dec. 31, the ministry reported a case in a six-day-old calf in the northern state of Tamaulipas, also the only positive case on site.