Disease Categories / Intestinal Nematodes

Diseas Scope Incubation
Angiostrongylus costaricensis infection A. costaricensis: Central and South America [ID, p. 2375] Central and South America; Rarely in Africa (Democratic Republic of the Congo); [Guerrant, p. 776] 2-4 weeks; [CCDM]
Anisakiasis Global occurrence wherever raw or inadequately processed fish consumed: Japan (sushi and sashimi); Scandinavia (graviax); South American Pacific coast (ceviche); the Netherlands (herring), and Spain (anchovies); [CCDM] Gastric: few hours; intestinal: few days to weeks; [CCDM, p. 15] 1-12 hours after ingestion of raw fish; [ID, p. 2364]
Ascariasis Most common in wet tropical regions where prevalence of infection often exceeds 50%; [CCDM] The prepatent period (1.5 to 2 months) is the time from the ingestion of eggs until the production of new eggs by adult worms. "Adult worms can live 1-2 years." [CCDM, p. 55]
Capillaria philippinensis infection Mainly in Philippines and Thailand; Cases reported in Japan, Korea, Taiwan, and Egypt; Isolated cases in Iran, India, Indonesia, and Columbia; [CCDM] Unknown; [CCDM]
Enterobiasis Global 1-2 months; [CCDM]
Hookworm disease Prevalent in the tropics and subtropics; [PPID, p. 3199] A few weeks to many months for symptoms to develop; [CCDM]
Strongyloidiasis Endemic in tropical and temperate zones including US and Europe; [PPID, p. 3440] 2-4 weeks for larvae to appear in feces; [CCDM]
Trichostrongyliasis Global, but endemic in the Middle East, India, North & Central Africa, SE Asia, Japan, Siberia, central & southern China, and southern republics in the former USSR; Cases reported in Australia, France, USA, and South America; [Guerrant, p. 780] Guesstimate: several weeks;
Trichuriasis Global, especially in warm, moist climates; [CCDM] Indefinite; Eggs appear in stool 70-90 days after ingestion of embryonated eggs; Symptoms may appear much earlier; [CCDM]