New World Screwworm in Arizona
As of November 2026, Arizona has 1 New World Screwworm alert in the past 30 days (1 confirmed case).
Risk Level
🟡 Moderate
Isolated cases — monitor the situation
Cases (30 days)
1
Total Cases
1
Counties Affected
1
Most recent New World Screwworm alert in Arizona: Nov 5, 2026
New World Screwworm Alerts in Arizona
About New World Screwworm
A parasitic infestation (myiasis) caused by the larvae of the New World screwworm fly, which lay eggs in the open wounds or mucous membranes of live, warm-blooded animals. Unlike most maggots, screwworm larvae feed on living tissue, producing rapidly enlarging, potentially fatal wounds. Eradicated from the United State…
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