translation.en: At least some of the three pandemics during the last (20th) century are thought to have come from an animal or bird influenza virus that itself mutated or swapped genes with a human (so called recombination) and acquired the ability to both infect humans and, more importantly, spread between them.
translation.mt: Mill-inqas uħud mit-tliet pandemiji li seħħew matul l-aħħar seklu (is-seklu 20) huma maħsuba li ġew minn virus tal-influwenza ta’ annimal jew għasfur li huwa stess għadda minn mutazzjoni jew partat il-ġeni ma’ dawk ta’ bniedem (hekk imsejħa rikombinazzjoni) u akkwista l-abbiltà li jinfetta kemm lill-bnedmin u, aktar importanti, li jinfirex bejniethom.