With coronavirus cases around the world now at over 20 million, scientists have been working around the clock to develop a vaccine.
Now, researchers from Washington University School of Medicine have tested an experimental coronavirus vaccine in mice, with promising results.
The tests revealed that the vaccine was able to prevent severe Covid-19 in the mice after just two doses. The vaccine is made from a mild virus genetically modified to carry a gene from the Covid-19 virus.
Dr Michael Diamond, co-senior author of the study, said: “Unlike many of the other vaccines under development, this vaccine is made from a virus that is capable of spreading in a limited fashion inside the human body, which means it is likely to generate a strong