A second case of the flesh-eating screwworm parasite has been confirmed in Texas, emerging just kilometres from where the first US detection in decades was reported.
The new case in Zavala County, confirmed by the US Department of Agriculture on Friday, was detected on a ranch 9km from the first positive case of screwworm in Texas, which was confirmed on Wednesday.
The department said the infection was in a one-month-old calf.
