Removal of Medfly Quarantine La Mesa Area San Diego County California

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December 10, 2015

Subject: Removal of Mediterranean Fruit Fly (Ceratitis capitata) Quarantine Area in the La Mesa Area of San Diego County, California

To: State and Territory Agricultural Regulatory Officials

Effective October 29, 2015, the Animal and Plant Health Inspection Service (APHIS) has removed the La Mesa area of San Diego County California from the Mediterranean fruit fly (medfly) quarantine area. As a result, California does not have any medfly quarantines.

On July 30, 2015, APHIS implemented the medfly quarantine in the city of La Mesa, San Diego County, California. The quarantine restricted the interstate movement of regulated articles from that area to prevent the spread of medfly to noninfested areas of the United States. Since then, APHIS has cooperated with the California Department of Food and Agriculture and the San Diego County Agriculture Commissioner’s office to eradicate the transient medfly population through various control actions, including high density trapping, fruit removal, sterile insect technique, regulatory quarantine measures, and foliar bait sprays near the detection sites.

Eradication was concluded after three lifecycles passed without finding additional Mediterranean fruit flies in this area. Accordingly, APHIS removed the interstate medfly quarantine in La Mesa on October 29, 2015. This removal of the quarantine area is reflected on the following designated website, which contains a description of all the current federal fruit fly quarantine areas:

For additional information on APHIS Fruit Fly Programs, you may call Exotic Fruit Fly Policy Manager John Stewart at 919-855-7426.


Osama El-Lissy

Deputy Administrator

Plant Protection and Quarantine