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Mexico Reports 204 New World Screwworm Cases Since April 2025

8/13/2026

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Summary

Story summary

Mexico reports a resurgence of the New World screwworm fly that infected people, with researchers recording 204 cases on men’s lower limbs between April 2025 and March 2026.
Six people died, including one death directly linked to the screwworm.
Mexico’s ministry says 500 human cases have been detected, including 45 in Texas and New Mexico, while the CDC reports no U.S. infections.
U.S. officials have begun sterile-male-fly releases at the sites.

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Story summary

Mexico reports a resurgence of the New World screwworm fly that infected people, with researchers recording 204 cases on men’s lower limbs between April 2025 and March 2026.
Six people died, including one death directly linked to the screwworm.
Mexico’s ministry says 500 human cases have been detected, including 45 in Texas and New Mexico, while the CDC reports no U.S. infections.
U.S. officials have begun sterile-male-fly releases at the sites.