collected by USAID in developing countries in Africa, for example, which that survey actually can go so far as to directly measure the HIV status of families living in, for example, rural Nigeria.
さらにUSAIDによる アフリカの途上国の ― 「人口保健調査」も資料に加えます たとえばナイジェリアの 農村部の世帯のHIV感染状況まで