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Could people still be infectious after they re vaccinated for COVID-19? By Audrey McNamara Doctor on challenges of COVID vaccine rollout
Vaccine trials test for efficacy, that is, whether or not a vaccine protects a participant from contracting a specific disease, in this case COVID-19. But trials do not look at whether a person could still be infectious able to give the disease to other people after receiving a vaccine. We just do not know yet the answer to (that) question, said Dr. Jaime Sepulveda, executive director of the Institute for Global Health Sciences at the University of California, San Francisco. The clinical trials were not designed to have that as an endpoint.