/b/veterinary-news/posts/nearly-50-of-farmers-not-vaccinating-against-enzootic-abortion-of-ewes Ceva Animal Health, the manufacturer of Cevac Chlamydia, has published the results of a new survey which showed that 47% of farmers are not vaccinating against enzootic abortion of ewes (EAE) 1 . 322 farmers took part in the survey, 83% of which haden-USTelligent Community 10