The UK government has signed a contract for the first human challenge studies for the novel coronavirus, in which healthy volunteers are deliberately infected with the virus in a controlled setting, and some receive an experimental vaccine. The trials will be held at the Royal Free hospital in London./Credit:	TOLGA AKMEN/AFP via Getty Images

The UK government has signed a contract for the first human challenge studies for the novel coronavirus, in which healthy volunteers are deliberately infected with the virus in a controlled setting, and some receive an experimental vaccine. The trials will be held at the Royal Free hospital in London./Credit: TOLGA AKMEN/AFP via Getty Images

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UK government signs contract for first coronavirus human challenge studies

The UK government has signed a contract for the first human challenge studies for the novel coronavirus, in which healthy volunteers are deliberately infected with the virus in a controlled setting, and some receive an experimental vaccine.