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Coronavirus vaccine trial by Pfizer shows mild to moderate side effects

Christian Fernsby |
Participants of a phase 3 clinical trial of American biopharmaceutical company Pfizer's coronavirus vaccine candidate were experiencing mild to moderate side effects, said the company on Tuesday.

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Topics: PFIZER   

In a presentation to investors, Pfizer said side effects included fatigue, headache, chills and muscle pain. Some participants in the trial also developed fevers, including a few high fevers.

The company has enrolled more than 29,000 people in its 44,000-volunteer trial to test the experimental coronavirus vaccine, BNT162b2, that Pfizer is developing with German partner BioNTech.

Over 12,000 study participants had received a second dose of the vaccine, Pfizer executives said on an investor conference call.

Depending on current infection rates, a conclusive readout on efficacy of the vaccine candidate is expected by the end of next month, according to the company.

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