Moderna shares jumped more than 15% in after-hours trading on Tuesday.

CHICAGO - 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.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 shares jumped more than 15% in after-hours trading on Tuesday.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."The world urgently needs vaccines to protect against COVID-19," said Dr Lisa Jackson of Kaiser Permanente Washington Health Research Institute in Seattle and lead author of the study. Read more at JPost