Prevalence and morbidity of schistosomiasis among rural fishermen at two Egyptian villages (Gharbia Governorate).

ABSTRACT

210 fishermen and 210 farmers from two Egyptian villages (Gharbia Governorate) were selected. Their main clinical manifestations were terminal haematuria in 17.1% and 10%, dysuria in 16.7% and 6.7%, renal colic in 13.3% and 2.4%, dysentery in 10.5% and 3.8%, bloody stool in 8.1% and 2.9%, pallor in 28.8% and 15.2%, hepatomegaly in 10.5% and 4.3% and splenomegaly in 8.6% and 3.8% in fishermen and farmers respectively with significant values among fishermen when compared with farmers. Abdominal ultrasonography of fishermen showed higher morbidity rates than farmers as regards hepatosplenomegaly, grades of periportal fibrosis, portal vein diameter, stones in Kidneys and urinary bladder as well as calcification of urinary bladder. S. mansoni prevalence was 72.4% in fishermen and 4.57% in farmers with highly significant value in fishermen when compared with farmers (P < 0.01). Geometric egg count (gm/stool) was 430 +/- 259 and 236 +/- 161 in fishermen and farmers respectively with highly significant difference (P < 0.001). All urine samples were negative for S. haematobium. The socioeconomic status of all individuals showed no significant difference between the two groups. It was concluded that fishermen had a higher S. mansoni prevalence, infection intensity and morbidity than farmers. This may be due to more water contact activities. A snail population survey of the river and main canals was recommended.