The Department of Health and Human Services (HHS) announced that the case was identified on August 4 in a patient who had recently returned to Maryland from El Salvador.

The human case of screwworm reported this week by U.S. health officials is the country's only case so far this year and poses no risk to the farm sector, a U.S. Department of Agriculture official said...

While human cases are uncommon, screwworm infestations are a growing concern for ranchers as cattle cases have been spreading north through Central America and Mexico, The AP said.