Very little attention seems to have been paid to this parasite during the last few years in this country, and very few references to it can be found in our literature. In 1890 Biggs reported a case found postmortem in New York. In 1895 Johnson reported several cases in Montreal. In 1906 Mark Johnson White of the United States Public Health Service reported eighteen cases in Chinese found postmortem during the plague investigations in San Francisco in 1901 and 1902.
Surgeon-General Blue1 mentions Clonorchis sinensis as one of the parasites that should be looked for and guarded against.
Craig2 draws attention to the disease caused by this parasite, and states that over twenty cases have been reported in the United States.
The present article is based on the examination of 686 Chinese and thirty-two Japanese; 507 of the Chinese were examined on arrival on the Pacific Mail Steamship