Archive · 2 Jan 2026

Mexico Reports Second Screwworm Case in Two Days

Mexico Reports Second Screwworm Case in Two Days

Mexico has found two cases of a harmful parasite called the New World screwworm in just two days.

The first case was in a baby cow in the state of Tamaulipas, and the second case was in a goat near Mexico City.

This parasite can hurt animals by laying eggs in their wounds, and the larvae eat the animal's flesh.

Mexico has been working hard to stop the spread of this parasite, which has already affected many animals.

The U.S. has also been worried because this parasite could hurt their livestock and economy.

So far, there are 13,106 reported cases, with 671 still active.

The states with the most cases are Chiapas, Oaxaca, Veracruz, and Yucatan.

The U.S. has kept its border closed to Mexican livestock to prevent the parasite from spreading.

Sources