The role of wild rats as a reservoir of some internal parasites in Qalyobia governorate.

A total of one hundred and seventy two rats were trapped from different localities, Rattus norvegicus and Rattus r. alexandrinus. The overall infection-rate was 54% (93 out 172 rats). The infection rates of identified parasites were 28% cestodes (23.8% Hymenolepis diminuta and 7% Cysticercus fasciolaris), 8% Acanthocephala species (Moniliformis moniliformis) and 7% nematodes (Strongyloides species). On the other hand, 40.7% were infected with protozoa (22.7% Cryptosporidium parvum, 20.3% C. muris, 8% Giardia lamblia and 12.8% Entamoeba cysts).