A longitudinal survey of African swine fever in Uganda reveals high apparent disease incidence rates in domestic pigs, but absence of detectable persistent virus infections in blood and serum

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• 作者：Denis Muhangi ; Charles Masembe ; Ulf Emanuelson ; Sofia Boqvist…
• 关键词：African swine fever (ASF) ; Epidemiology ; Incidence rate ; Risk factors ; Smallholder farmers
• 刊名：BMC Veterinary Research
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：11
• 期：1
• 全文大小：736 KB
• 刊物主题：Veterinary Medicine; Zoology; Transgenics;
• 出版者：BioMed Central
• ISSN：1746-6148

文摘

Background African swine fever (ASF) is a fatal, haemorrhagic disease of domestic pigs, that poses a serious threat to pig farmers and is currently endemic in domestic pigs in most of sub-Saharan Africa. To obtain insight into the factors related to ASF outbreaks at the farm-level, a longitudinal study was performed in one of the major pig producing areas in central Uganda. Potential risk factors associated with outbreaks of ASF were investigated including the possible presence of apparently healthy ASF-virus (ASFV) infected pigs, which could act as long-term carriers of the virus. Blood and serum were sampled from 715 pigs (241 farms) and 649 pigs (233 farms) to investigate presence of ASFV and antibodies, during the periods of June-October 2010 and March-June 2011, respectively. To determine the potential contribution of different risks to ASF spread, a questionnaire-based survey was administered to farmers to assess the association between ASF outbreaks during the study period and the risk factors.