Abdominal examination. A health worker examines the abdomen a young Tanzanian boy for signs of schistosomiasis. Schistosomiasis (bilharzia) is a chronic trematode worm infection widespread in Asia,Africa,the Caribbean and South America. Snails are the intermediate hosts in human schistosomiasis. Infection occurs when humans enter fresh water containing infective larvae emitted by the snails. The worms mature in the veins of the intestines and bladder,producing large numbers of eggs whose presence provokes inflammation and fibrosis that obstructs blood flow in the liver or urine flow from the ureters. Treatment is with the drug praziquantel | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Crump, Andy / WHO / TDR |
Taille de l’image : | 5081 px × 3520 px |
Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
Property Release : | Non requis |
Restrictions : | - |