Читать книгу Practical Guide to Diagnostic Parasitology - Lynne Shore Garcia - Страница 69

The Acanthocephala (thorny-headed worms) are closely related to the tapeworms. These worms are diecious and tend to have a retractable proboscis which is usually armed with spines. The larvae require an arthropod intermediate host, and the adult worms are always parasites in the intestine of vertebrates. Two of these organisms are parasitic in humans: Macracanthorhynchus hirudinaceus and Moniliformis moniliformis. Human infection is acquired from the ingestion of infected insects (various beetles and cockroaches). Very few cases have been reported in the literature; however, symptoms included abdominal pain and tenderness, anorexia, and nausea. In some cases, adult worms have been passed in the stool.