Rubuta ci gaba don wannan sakin layi - Ba a san cutar kwalara a cikin Amurka ba don yawancin karni na 20, amma ya sake bayyana a ƙarshen wannan karni. Bayan karshen shekarun 2010 Haiti cutar kwalara ta barke
, ba a sami cutar kwalara a Amurka ba tun 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.