Coronavirus vaccine update: Pfizer, BioNTech start late stage vaccine trial
At present, 25 coronavirus vaccine
candidates are in human clinical trials. This raises the hope that a vaccines
could contribute to ending the pandemic, which has so far infected over 16.4
million people worldwide and claimed over 650,000 lives. More than 150 possible
vaccines are being developed and tested around the world, including in India,
Britain, China, the US, Russia and Israel, to try to stop the pandemic. Among
the coronavirus vaccine
candidates are in human clinical trial stage at present are those of Moderna,
AstraZeneca Plc, BioNTech, Novavax, Sinovac, CanSino Biologics and Inovio
Pharmaceuticals. Although it is still unclear if any of these vaccines will
ultimately prove effective against the virus, Britain and other developed
countries are already investing in the vaccines to ensure there is enough
manufacturing capacity to deliver any successful candidate.
Why is a coronavirus vaccine
important?
The
virus spreads easily and the majority of the world's population is still
vulnerable to it. A vaccine would provide some protection by training people's
immune systems to fight the virus so that they do not become sick.
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