Moderna Inc’s experimental vaccine for COVID-19 showed it was safe and provoked immune responses in all 45 healthy volunteers in an ongoing early-stage study, U.S. researchers reported on Tuesday (July 14).
No study volunteers experienced a serious side effect, but more than half reported mild or moderate reactions such as fatigue, headache, chills, muscle aches, or pain at the injection site.
These were more likely to occur after the second dose and in people who got the highest dose, the team reported in the New England Journal of Medicine.
Moderna was the first to start human testing of a vaccine for the novel coronavirus on March 16, some 66 days after the genetic sequence of the virus was released.
Experts say a vaccine is needed to put an end to the pandemic that has sickened millions and caused nearly 575,000 deaths worldwide.
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