The Guardian: "I think there’s a big rush, a somewhat nationalistic rush and also somewhat capitalistic rush as well, to be absolutely first to register a vaccine, and it will actually make it more difficult to evaluate other vaccines." While admitting a vaccine is needed soon, he added: "We really do need quite strong evidence of efficacy."Scientists have warned politicians and commercial companies to be cautious.Without comprehensive results showing at least 30-50% effectiveness, vaccines risk doing more harm than good, they claim.
The group told the Lancet medical journal: "Deployment of a weakly effective vaccine could actually worsen the Covid-19 pandemic if authorities wrongly assume it causes a substantial reduction in risk, or.
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