Epidemiology of African swine fever in Can Tho city - Preliminary study

Abstract

African swine fever (ASF) has occurred in Can Tho city since 2019, causing losses over 50% of the pig herds. The high infection rate was in the breeding herds (68.34 -73.70%), followed by the pig herds for meat (49.51%) and the piglets (30.22%) with the typical clinic characteristics of ASF that reported in the worldwide. Analysis of the risk factors causing the ASF transmission showed that the pig farms located near the residential areas and other livestock farms (less than 100m); near the main roads (less than 200m) and far away from the animal slaughterhouses and markets (less than 3km) faced with the ASF infection 3-4 times higher in comparison with the pig farms located outside the above mentioned factors.
In the pig farms keeping good veterinary hygiene, disinfection and well controlling the wild animals and insects could reduce the risk of ASF infection lower 2-3 times in comparison with the uncontrolled farms. Therefore, raising pigs in the captive farms restricted the lowest disease infection. The studied result also showed that the un-infected sows remaining after the ASF epidemic could breed normally so that these sows can be kept for the breeding purposes