The Worldwatch Institute reports that during the past three decades, "more than thirty previously unrecognized diseases such as Ebola, HIV, Hantavirus, and SARS have emerged as new threats."
Setheo sa Worldwatch Institute se bega gore mo dingwageng di le 30 tse di fetileng, "malwetse a feta masome a mararo a pele a neng a sa itsiwe a a jaaka Ebola, HIV, Hantavirus le SARS [bolwetse jo bo bakelang motho mathata a magolo a go hema] e setse e le one a a leng kotsi thata mo bathong."