Thursday, 24 September 2020

Coronavirus vaccine: What are human challenge trials?

Coronavirus vaccine: What are human challenge trials? Human challenge trials are regarded by some as a faster way to develop vaccines - but they come with big risks.

Challenge trials have been used for hundreds of years but a lot of people question how ethical is to deliberately expose people to an infectious disease.

More than 140 different organisations around the world are currently trying to discover a vaccine for Covid-19.

But could challenge trials be used to speed up the process? BBC News

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