Abstract
Further studies carried out in Micronesia have indicated the following percentage of infection with the lungworm, Angiostrongylus cantonensis, among rats examined: Ponape, 32.9; Rota, 23.8; Saipan, 20.0; and Tinian, 21.7. Rattus rattus appear to be the most common species of rats in Micronesia. Land crabs, coconut crabs, and freshwater prawns were found naturally infected with the third-stage larvae of A. cantonensis. Human infection in Micronesia is believed to result largely from the ingestion of some of the above-mentioned raw crustaceans.