Coronavirus News
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…
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 Health Correspondent Laura Foster explains how they work.
Video by Terry Saunders, Megan Fisher and Laura Foster.
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