 Waxaan u gambinnay shan xabbadood oo nalagu soo riday 20-kii sano ee lasoo dhaafay, waxaan soo wajahnay lix cudur oo khatar weyn abuuray - kuwaasoo kala ah Covid-19, SARS, MERS, Ebola, avian influenza iyo swine flu, ayuu BBC-da ku yiri Barfasoor Matthew Baylis oo ka tirsan jaamacadda Liverpool. 