| the epidemiology of schistosoma spindale montgomery, 1906 in cattle in sri lanka. | during 1988 and 1989, the mesenteric veins of 901 cattle were examined for the presence of schistosomes at the kandy slaughterhouse (sri lanka). the overall prevalence of infection was 31.2%. animals younger than 2 years were less infected (21.3%) than those older than 5 years (47.9%). based on the number of paired worms counted, three intensities of infection were recognized: low (1-20 pairs), moderate (21-100 pairs) and heavy (greater than 100 pairs). intensities increased with the age of the ... | 1991 | 1852491 |