| trichuris | A genus of nematode worms comprising the whipworms. (12 Dec 1998) |
|---|---|
| Trichuris trichiura | The whipworm of humans, a species that causes trichuriasis; the body is filiform and slender in the anterior three-fifths, and more robust posteriorly; females are 4 or 5 cm long, males are shorter (with coiled caudal extremity and a single eversible spicule); eggs are barrel-shaped, 50 to 56 by 20 to 22 um, with double shell and translucent knobs at each of the two poles; humans are the only susceptible hosts and usually acquire infection by direct finger-to-mouth contact or by ingestion of soil, water, or food that contains larvated eggs (development in the soil takes 3 to 6 weeks under proper conditions of warmth and moisture, hence distribution is chiefly tropical); larvae escape from eggs in the ileum, mature in approximately a month, and then pass directly into the caecum without undergoing a parenteral migration as occurs with Ascaris lumbricoides; adults may persist for 2 to 7 years. (05 Mar 2000) |
| Balantidium suis | A species originally considered distinct from the ciliate parasite of man, Balantidium coli, but now considered synonymous with it; nonpathogenic in swine. (05 Mar 2000) |
| Brucella suis | A species causing abortion in swine, brucellosis in man, and a wasting disease in chickens; may also infect horses, dogs, cows, monkeys, goats, and laboratory animals. (05 Mar 2000) |
| Haemophilus suis | <bacteria> A species, related to Haemophilus influenzae, found in swine and associated with influenza virus in the pneumonia of swine influenza. (05 Mar 2000) |
| streptococcus suis | A species of streptococcus isolated from pigs. It is a pathogen of swine but rarely occurs in humans. (12 Dec 1998) |
| Isospora suis | A species that affects the small intestine of the pig, producing mild diarrhoea. (05 Mar 2000) |
| Eperythrozoon suis | A species that produces icterus and anaemia in young pigs and icteroanaemia of swine. (05 Mar 2000) |
| Trichomonas suis | Former name for Tritrichomonas suis. (05 Mar 2000) |
| Trypanosoma suis | A species pathogenic for swine in Africa; it is transmitted by tsetse flies. (05 Mar 2000) |