@article{1678, keywords = {Outbreak investigation, biosecurity, African Swine Fever}, author = {K Lamberga and M Seržants and E Oļševskis}, title = {African swine fever outbreak investigations in a large commercial pig farm in Latvia: a case report}, abstract = {In Mid-January 2017 a large commercial pig breeding farm in Latvia with almost 5000 animals was affected by African swine fever (ASF). Epidemiological investigations using a hypothesis based approach were conducted to trace the source of virus and to reconstruct the course of the disease until notification. Although the farm was located in an area where the disease is circulating in the wild boar population, it was found highly unlikely that wild boar might have played a direct role in this outbreak. Management inconsistencies related to human behavior proved to be the main vulnerabilities for virus introduction. Farm management did not fulfill biosecurity requirements in all aspects to prevent virus introduction. Therefore, the human factor could not be ruled out and has been considered to be the most serious risk factor. Most probably the ASF virus entered the farm beginning of December 2016, about six weeks before disease confirmation. It was concluded that early detection of ASF by passive surveillance is most crucial and has to be improved. In risk areas dead pigs should be compulsory tested for ASF even if farm mortality is below the normal threshold. }, year = {2018}, journal = {Berliner und Münchener Tierärztliche Wochenschrift}, volume = {131}, month = {10/2018}, publisher = {Schlütersche Verlagsgesellschaft mbH & Co. KG}, address = {Hannover}, issn = {0005-9366}, doi = {10.2376/0005-9366-18031}, language = {English}, }