Old San Juan detections prompt a Medfly quarantine
A Mediterranean fruit fly detection in a public space led to a quarantine covering 27.29 square miles in Old San Juan, San Juan Municipality, Puerto Rico. In an official notice posted on September 30, 2026, through the NAPPO Phytosanitary Alert System, the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) reported the action taken with the Puerto Rico Department of Agriculture (PRDA).
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