Some of the countries with the highest rates of prevalence in sub-Saharan Africa are Botswana, Namibia, Zambia and South Africa, which all have rates of over 20% and all share a border with or are close to Angola.
撒哈拉以南非洲国家中感染率较高的有博茨瓦纳、纳米比亚、赞比亚和南非，其感染率都在20%以上，且都与安哥拉接壤或在其周边。