Kerfua Susan Diana, Railey Ashley Flynn, Marsh Thomas Lloyd
National Livestock Resources Research Institute, National Agricultural Research Organisation, Entebbe, Uganda.
Department of Sociology, Oklahoma State University, Stillwater, OK, United States.
Front Vet Sci. 2023 Jun 5;10:1156458. doi: 10.3389/fvets.2023.1156458. eCollection 2023.
Foot-and-mouth disease (FMD) is a highly contagious viral disease that is endemic in East Africa. FMD virus infection incurs significant control costs and reduces animal productivity through weight loss, lowered milk yield, and potentially death but how household's respond to these losses may differentially affect household income and food consumption.
To address this, we use unique data from a FMD outbreak to assess how household production and consumption activities change from before to during the outbreak. Data came from a 2018 survey of 254 households in selected Tanzanian wards and sub-counties in Uganda. The data includes household recall of before and during an outbreak in the past year on livestock and livestock product sales, milk and beef consumption, as well as related changes in market prices. We apply both difference-in-difference and change in difference ordinary least squares regressions with fixed effects to evaluate the impact of FMD on household production and consumption.
We find that households reported the largest reductions in livestock and livestock product sales, followed by reduced milk consumption and animal market prices. The changes in household income from livestock sales appears to be driven by FMD virus infection within the household herd while changes in market prices of substitute protein sources are primary associated with changes in milk and beef consumption. The role of widespread market price effects across both infected and uninfected herds and countries, tends to suggest that stabilizing prices will likely have a large impact on household nutritional security and income generation. We also propose that promoting diversity in market activity may mitigate differing impacts on households in FMD endemic regions.
口蹄疫(FMD)是一种高度传染性的病毒性疾病,在东非地区流行。口蹄疫病毒感染会带来巨大的防控成本,并通过体重减轻、产奶量下降以及可能导致的死亡降低动物生产力,但家庭对这些损失的应对方式可能会对家庭收入和食物消费产生不同影响。
为解决这一问题,我们利用口蹄疫疫情的独特数据,评估家庭生产和消费活动在疫情爆发前到爆发期间如何变化。数据来自2018年对坦桑尼亚选定病房和乌干达次县的254户家庭的调查。数据包括家庭对过去一年疫情爆发前和期间牲畜及畜产品销售、牛奶和牛肉消费的回忆,以及市场价格的相关变化。我们应用双重差分法和带固定效应的差分变化普通最小二乘法回归,以评估口蹄疫对家庭生产和消费的影响。
我们发现,家庭报告的牲畜和畜产品销售减少幅度最大,其次是牛奶消费减少和动物市场价格下降。家庭牲畜销售收入的变化似乎是由家庭畜群中的口蹄疫病毒感染驱动的,而替代蛋白质来源市场价格的变化主要与牛奶和牛肉消费的变化相关。感染和未感染畜群及国家的广泛市场价格效应的作用,往往表明稳定价格可能会对家庭营养安全和收入产生重大影响。我们还建议,促进市场活动的多样性可能会减轻对口蹄疫流行地区家庭的不同影响。