Moderna's coronavirus vaccine triggered a strong antibody response in older adults, and only triggered 'severe' side effects in one volunteer, new data from the firm's phase 2 testing shows. Two doses of the shot were given to each of about 40 volunteers, ages 56 to 70 and older. About 80 percent of people who have died of coronavirus are older, making the safety of any vaccines against COVID-19 in aging populations paramount. The majority of the older participants, ages 65 and up, had only mild side effects (gray) after both their first and second doses of Moderna's coronavirus shot. The second severe adverse event occurred in a participant who was 71 or older and received two injections of the higher dose vaccine and developed more lasting fatigue.

Source: Daily Mail September 29, 2020 21:10 UTC