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 influenza strain (so called recombination) and acquired the ability to both infect humans and, more importantly, spread between them.
translation.mt: Ta' l-anqas x'uħud mit-tliet pandemiċi matul l-aħħar seklu (20) huma maħsuba li ġew minn virus ta' l-influwenza ta' l-annimali jew l-għasafar li hu nnifsu bidel il-forma jew partat il-ġeni ma' strain ta' l-influwenza tal-bniedem (l-hekk imsejħa rikombinazzjoni) u akkwista l-abbiltà li jinfetta lill-bnedmin, u aktar importanti, jinfirex bejniethom.