Britain moves closer to Covid-19 vaccine trials that infect volunteers

“Human challenge” trials of potential Covid-19 vaccines, where volunteers are deliberately infected with the disease, could become a reality after a British biotech firm said it was in advanced talks with the government to create and provide strains of the virus.

  Preliminary work for the trials, which aim to speed up the process of determining the efficacy of a vaccine candidate, is being carried out by hVIVO, a unit of pharmaceutical services group Open Orphan, the company said. “We are in discussions with.....

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