"In the last 20 years, we've had six significant threats - Sars, Mers, Ebola, avian influenza and swine flu," Prof Matthew Baylis from the University of Liverpool told BBC News.
"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.