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Animal and Plant Health Inspection Service
U.S. Department of Agriculture
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APHIS Removes Zone B from the Giant African Snail (Lissachatina fulica, formally Achatina fulica) List of Regulated Areas

April 20, 2021 

To: State and Territory Agricultural Regulatory Officials 

Effective March 22, 2021, the Animal and Plant Health Inspection Service (APHIS) removed giant African snail (GAS) regulated area Zone B from the list of quarantine areas in Miami-Dade County, Florida. APHIS and the Florida Department of Agriculture and Consumer Services (FDACS) collaborated to develop the protocol for removing areas from quarantine. Under the protocol, APHIS and FDACS require an area/zone to meet the following criteria to remove it from quarantine:

  • Surveillance and treatment efforts for 17 months with no detection of live GAS;
  • An additional 19 months of surveillance with no detection of live GAS;
  • A minimum of one negative detector dog survey; and
  • A minimum of one negative night survey, when snails may be more active. 

APHIS determined that Zone B meets the criteria for removal from quarantine. 

APHIS and FDACS continue to evaluate the remaining GAS-infested areas to determine whether they meet the protocol criteria. The revised map and descriptions of the areas regulated for GAS are posted on the APHIS website at:

For further information regarding the GAS program, please contact the National Operations Manager, Melinda Sullivan, at 970-494-7580. 


Dr. Osama El Lissy
Deputy Administrator
Plant Protection and Quarantine

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