US and state officials are working to contain the screwworm, a flesh-eating parasite, after its first confirmation on a US farm in decades in South Texas. A quarantined calf was found infested, raising concerns for cattle ranchers.

Following the ⁠first confirmation of screwworm, a flesh-eating parasite, on a US farm in decades, federal and state officials have fanned out in South Texas, where a calf was found infested this week. US Agriculture Secretary Brooke Rollins said on Thursday no other infestations of cattle or other animals have been detected around the confirmed case. The case in La Pryor, Texas, was a blow to US cattle ranchers who have been bracing for a domestic outbreak of New World screwworm as the fly...