As Texas ramps up efforts to stop the spread of a flesh-eating parasite, health officials confirmed Monday the first U.S. case of the New World screwworm (NWS) in a human. The case involved a patient returning from travel in El Salvador,

The CDC confirmation came about a week and a half before the U.S. agriculture secretary said Texas would host a sterile fly facility to slow the screwworm spread.

The patient had recently returned to Maryland after traveling to El Salvador. The risk to public health in the US is very low.