The prevalence of food insecurity is much higher in East Africa than in other parts of the world. Climate change and associated variability are important contributors to food insecurity in the region. Using primary data collected in 2018/19 from Ethiopia, Kenya and Tanzania, this study examines the links between the prevalence of household food insecurity (the access to food dimension) and vulnerability to climate change in East Africa. The Household Food Insecurity Access Scale (HFIAS) was constructed to measure the prevalence of household food insecurity, and an ordered probit econometrics model was used to investigate the factors affecting the prevalence rates. The aggregate results show that 52% of the total sampled households in the region were food-secure; 15% and 26% were mildly food-secure and moderately food-insecure, respectively; and the remaining 7% were severely food-insecure. The ordered probit results suggest that exposure to climate change extremes and crop losses caused by these extremes significantly contribute to the prevalence of food insecurity across countries in East Africa. The results also indicate that households’ adaptive capacity plays a significant role in reducing the prevalence of food insecurity. The demographic/human, social, financial, physical, and natural assets/capital of the household also play a significant role in reducing household-level food insecurity in Ethiopia, Kenya, and Tanzania.

东非的粮食不安全发生率远高于世界其他地区。气候变化和相关变异是该地区粮食不安全的重要原因。本研究使用 2018/19 年从埃塞俄比亚、肯尼亚和坦桑尼亚收集的主要数据，研究了东非家庭粮食不安全（粮食获取方面）的普遍性与气候变化脆弱性之间的联系。构建家庭粮食不安全获取量表（HFIAS）来衡量家庭粮食不安全的发生率，并使用有序概率计量经济学模型调查影响发生率的因素。汇总结果显示，该地区抽样家庭总数的 52% 是粮食安全的；15% 和 26% 分别为轻度粮食安全和中度粮食不安全；剩下的 7% 严重粮食不安全。有序概率结果表明，暴露于极端气候变化和这些极端事件造成的作物损失显着导致东非各国普遍存在粮食不安全问题。结果还表明，家庭的适应能力在降低粮食不安全发生率方面发挥着重要作用。在埃塞俄比亚、肯尼亚和坦桑尼亚，家庭的人口/人力、社会、金融、物质和自然资产/资本在减少家庭层面的粮食不安全方面也发挥着重要作用。结果还表明，家庭的适应能力在降低粮食不安全发生率方面发挥着重要作用。在埃塞俄比亚、肯尼亚和坦桑尼亚，家庭的人口/人力、社会、金融、物质和自然资产/资本在减少家庭层面的粮食不安全方面也发挥着重要作用。结果还表明，家庭的适应能力在降低粮食不安全发生率方面发挥着重要作用。在埃塞俄比亚、肯尼亚和坦桑尼亚，家庭的人口/人力、社会、金融、物质和自然资产/资本在减少家庭层面的粮食不安全方面也发挥着重要作用。