First human trial to evaluate vaccine against COVID-19 begins in US

The first human trial to evaluate a candidate vaccine against coronavirus disease 2019 has begun in Seattle, US health officials said.

The US National Institutes of Health (NIH) said in a statement that the open-label trial will enroll 45 healthy adult volunteers ages 18 to 55 years over approximately 6 weeks. The first participant received the investigational vaccine yesterday.

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