African Swine Fever in Two Large Commercial Pig Farms in LATVIA—Estimation of the High Risk Period and Virus Spread within the Farm
Kristine Lamberga 1,2; Edvins Olševskis 1,3; Martinš Seržants 1; Aivars Berzinš 2,3; Arvo Viltrop 4 and Klaus Depner 5.
1. IntroductionThe first set of cases of African swine fever (ASF) in Latvia were detected in the wild boar population at the eastern border with Belarus in June 2014 [1–3]. The disease continued to spread over most of the territory of Latvia within the following years [4–6]. Similar to other ASF affected countries, the infection cycle is maintained by wild boar and this remains a perm...