4th large-scale Covid-19 vaccine trial underway in US

The trial is designed to evaluate if the investigational Janssen coronavirus vaccine JNJ-78436725 can prevent symptomatic Covid-19 after a single dose regimen, Xinhua news agency quoted the NIH as saying in a statement on Wednesday.The trial is designed to evaluate if the investigational Janssen coronavirus vaccine JNJ-78436725 can prevent symptomatic Covid-19 after a single dose regimen, Xinhua news agency quoted the NIH as saying in a statement on Wednesday.

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