WHO says only dexamethasone has shown effectiveness in treating severe Covid-19 cases.
No tissue or blood samples were collected from their bodies for analysis, officials said.
The technology has led to innovative cancer treatments, and many experts hope it could one day make inherited diseases curable.
The physicists were selected "for their discoveries about one of the most exotic phenomena in the universe, the black hole."
Their discovery allowed the rapid development of antiviral drugs directed at hepatitis C.