As the coronavirus rises from a regional crisis toward a global pandemic with thousands of people infected across more than 50 countries, scientists are racing to develop a vaccine to prevent the infection.
Although physicians still have no vaccine or cure for the virus, pharmaceutical and biotech companies around the world are working hard to develop potential vaccines after obtaining genetic information about the virus.
Doctors around the world have been trying a combination of HIV and flu drugs.
The World Health Organization's director-general said on Friday that more than 20 potential vaccines aimed at preventing coronavirus disease were in development around the world. But health officials have consistently said it will take at least a year before any vaccine is proven effective and gets necessary approvals for wide distribution.
And by the time a vaccine clinically proves its worth and is manufactured on a large scale, it could be too late to make a significant dent in the course of the epidemic.