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Posts tagged as “infect participants”

‘The Power of Natural Immunity’: COVID Challenge Trials Struggle to Infect Participants, Even at High Doses

‘The Power of Natural Immunity’: COVID Challenge Trials Struggle to Infect Participants, Even at High Doses

‘The Power of Natural Immunity’: COVID Challenge Trials Struggle to Infect Participants, Even at High Doses

May 8, 2024

By Brenda Baletti, Ph.D. Scientists trying to reinfect people with the COVID-19 virus so they could test vaccines and treatments found high levels of immunity…

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