The planned dispersal of sterile flies in Samalayuca was suspended on Friday, halting a containment step that had been set in motion after a first case of screwworm was detected in a dog from the area.
That is why Chihuahua is being watched now. The operation was intended to slow the possible spread of the gusano barrenador, and the suspension leaves that response without one of its visible pieces on the day it was due to begin.
The move matters because sterile-fly releases are usually meant to interrupt the insect’s ability to reproduce. In this case, the plan was not a routine gesture; it was tied to a specific alert after the first case was found in a dog from the area, making Friday the date when the response was supposed to move from concern to action.
But the dispersal did not go ahead, and the reason was not explained. That gap is the sharpest part of the story: a containment measure was prepared, the threat it was meant to address was already on the record, and then the operation stopped without a public explanation for why.
For people in Samalayuca and the surrounding area, that leaves the next step unclear. The report does not say whether the sterile-fly dispersal will be rescheduled or when the containment effort might resume, even as the first detected case keeps the risk in view.
