New world screwworm  (Cochliomyia hominivorax) and Old world screwworm  (Chrysomya bezziana)

Article 8.12.1.

Recommendations for importation from countries considered infested with New World or Old World screwworm

For domestic and wild mammals

Veterinary Authorities should require the presentation of an international veterinary certificate attesting that:

1. immediately prior to loading, the animals to be exported have been inspected, on the premises of origin, by an official veterinarian. After inspection for wounds with egg masses or larvae of New World or Old World screwworm, any infested animal has been rejected for export;

2. immediately prior to entering the quarantine pens in the exporting country:

   1. each animal has been thoroughly examined for infested wounds, under the direct supervision of an official veterinarian, and that no infestation has been found in any animal; and

   2. any wounds have been prophylactically treated with an officially approved oily larvicide at the recommended dose; and

   3. all animals have been dipped, sprayed, or otherwise treated, immediately after inspection, with a product officially approved by the importing and exporting countries for the control of New World or Old World screwworm, under the supervision of an official veterinarian and in accordance with the manufacturer's recommendations;

3. at the end of the quarantine and immediately prior to shipment for export:

   1. all animals have been re-examined for the presence of infestation and all animals have been found free of infestation;

   2. all wounds have been prophylactically treated with an approved oily larvicide under the supervision of an official veterinarian;

   3. all animals have been prophylactically treated again by dipping or spraying as in point 2) above.

Article 8.12.2.

Quarantine and transportation recommendations

1. The floor of the quarantine area and the vehicles must be thoroughly sprayed with an officially approved larvicide before and after each use.

2. The transit route must be the most direct, with no stopover without prior permission of the importing country.

Article 8.12.3.

Post importation inspection

1. On arrival at the importation point, all animals must be thoroughly inspected for wounds and possible New World or Old World screwworm infestation under the supervision of an official veterinarian.

2. The bedding material of the vehicle and the quarantine area should immediately be gathered and burned following each consignment.

Article 8.12.4.

Import/export of animal products

The larval stage of the New World or Old World screwworm fly is dependent on live animals and cannot survive for any length of time in dead tissue or animal products; therefore, restrictions on these products are not considered necessary.

nb: first adopted in 1992; most recent update adopted in 1998.