| encephalomyocarditis virus infection of pigs. 1. an outbreak in new south wales. | substantial pig mortalities due to heart disease caused by emc virus infection are described. the majority occurred in 1970 in conjunction with a rodent plague, but retrospective diagnosis of occasional similar mortalities in previous years was possible. mortality rates in pigs aged 3 to 16 weeks ranged from a few percent to over 50% and the rate was generally highest in younger animals. it is likely that a considerable proportion of cases was sub-clinical. focal or diffuse pale areas occurred i ... | 1975 | 173273 |