Name: Latin: ollula = small cups; tri = three; cuspis = spike, thorn; sus = pig; Skrjabin = Russian helminthologist. Eng-lish: stomach worms.
Geographic distribution/epidemiology: Worldwide in foxes and cats (= O. tric-uspis), pigs (= O. suis, O. skrjabini).
Morphology/life cycle: The adult Ollulanus worms are very small and reach mostly only a length of about 1 mm. They live in the mucous layer of the stomach where females give birth to motile larvae 3, which are set free occasionally by vomiting or reach maturity still in the same host.
Symptoms of disease (Ollulanosis): Vomiting, gastritis, loss of appetite and of weight, weakness.
Infection: Oral uptake of own or foreign vomited material containing larvae 3, which reach maturity in the stomach.
Prophylaxis: Quick removement of vomited material especially in elevation facilities with numerous animals.
Incubation period: A few days in case of massive infections.
Prepatent period: About 5 weeks in cases of infections with larvae 3; in cases of ingestion of adult worms, 2–3 days.
Patency: Years due to repeated self-infections.
Therapy: Use of levamisole (5 days 5 mg/kg bodyweight subcutaneously) or use of benzimidazoles (e.g., fenbendazole 2 × 10 mg/kg bodyweight).