Ka cika wannan jumla: Ba a san kwalara a Amirka ba a yawancin ƙarni na 20, amma ta sake bayyana a ƙarshen wannan ƙarni. Bayan karshen
2010s Haiti cutar kwalara, ba a sami cutar kwalara a Amurka ba tun daga watan Fabrairun 2019. Cutar ta zama ruwan dare a Afirka da wasu yankuna na Asiya (Bangladesh, Indiya da Yemen). Cutar kwalara ba ta zama ruwan dare a Turai ba, duk wadanda aka ruwaito sun yi tafiya zuwa yankunan da ke fama da cutar.