Coronavirus particles (yellow) on the surface of a dying cell
Niaid/National Institutes Of Health/Science Photo Library
DEXAMETHASONE has become the first drug shown to lower the death rate from covid-19. The discovery of the benefits of this widely available steroid, which damps down an overactive immune system, was seen as a much-needed piece of good news. But we will need lots of other treatments to help us turn the tide of severe covid-19.
Many of the coronavirus drug trials so far have looked at antiviral medicines that may stop the virus from replicating. While some of these appear …