From the literature it is evident that trichinosis occurs much more frequently than is generally supposed. It has been reported that on routine postmortem examination of several thousand diaphragms an incidence of trichinosis was found varying in different series from 13.6 per cent1 to 17.5 per cent2 and even as high as 28 per cent.3 Some believe the explanation for these figures lies in the fact that from 3 to 6 per cent of hogs are infected with trichinae.4
Trichinella spiralis belongs to the family of Nemathelminthes or roundworms and enters the human body in raw or inadequately cooked pork. The gastric juices dissolve the protective capsule of the larvae and free the worm, allowing the latter to pass into the small intestine, where coitus occurs. The female then burrows under the surface of the intestinal mucosa and deposits viviparous young in the lymphatic and vascular
Hoyne AL, Wolf AA. TRICHINOSIS: REPORT OF TRICHINAE IN VOCAL CORDS OF A PATIENT WITH DIPHTHERIA. JAMA. 1938;111(8):701–702. doi:10.1001/jama.1938.72790340003010b
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