Confirmation of nation’s first cases of New World screwworm came last week when animal health officials detected suspect lesions on the umbilical cord of a young calf in Zavala County, just west of Uvalde.
The finding was confirmed June 3 by the National Veterinary Services Laboratory in Ames, Iowa. A second case involving another young calf came two days later in the same county, about six miles from where the first confirmed case turned up.
Both areas are now under quarantine by state and federal officials.
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