conclusions the present study showed that cchf is highly prevalent in high risk occupational groups in zahedan, iran. further surveillance, teaching and prevention programs are recommended. results out of 362 patients with cchf (86% male, 14% female; with age range 12-78 years), 123 (34%) were slaughterhouse workers, 103 (28.5%) livestock handlers and farmers, 32 (9%) housewives, 7 (2%) student...