Kuparara kwakaitwa nechirwere ichi kwakabatsira zvikuru kuedza kweEurope kubvisa uye kukunda vagari veko. Chirwere cheFlu ndechepasi rose. Chirwere cheFlu cha1918, icho chakapfuurira kusvika muna1919, chaive chirwere cheFlu chechikamu 5 chinokonzerwa nehutachiona hweFlu A husina kujairika uye hunouraya. Vakafa vacho vaiwanzove vanhu vakuru vane hutano, kusiyana nehutachiona hweFlu, hunonyanya kukanganisa vechidiki, vakwegura, kana kuti vasina kusimba. Zvinofungidzirwa kuti hwakauraya vanhu mamiriyoni 40-50 mushure mekusvika kwaColumbus muAmerica, asi tsvakurudzo ichangobva kuitika inoratidza kuti yakauraya vanhu vanosvika 70% vevagari vemo.
Chikamu 5