For the second time this month, there's promising news from a COVID-19 vaccine candidate: Moderna said Monday its shots provide strong protection, a dash of hope against the grim backdrop of coronavirus surges in the U.S. and around the world.
Moderna said its vaccine appears to be 94.5% effective, according to preliminary data from the company's still ongoing study. A week ago, competitor Pfizer Inc. announced its own COVID-19 vaccine appeared similarly effective -- news that puts both companies on track to seek permission within weeks for emergency use in the U.S.
Dr. Stephen Hoge, Moderna's president, welcomed the "really important milestone" but said having similar results from two different companies is what's most reassuring.
"That should give us all hope that actually a vaccine is going to be able to stop this pandemic and hopefully get us back to our lives," Hoge told The Associated Press.
"It won't be Moderna alone that solves this problem. It's going to require many vaccines" to meet the global demand, he added.
Moderna's vaccine, created with the National Institutes of Health, is being studied in 30,000 volunteers who received either the real vaccination or a dummy shot. On Sunday, an independent monitoring board broke the code to examine 95 infections that were recorded starting two weeks after volunteers' second dose -- and discovered all but five illnesses occurred in participants who got the placebo.
The study is continuing, and Moderna acknowledged the protection rate might change as more COVID-19 infections are detected and added to the calculations. Also, it's too soon to know how long protection lasts. Both cautions apply to Pfizer's vaccine as well.
But Moderna's independent monitors reported some additional, promising tidbits: All 11 severe COVID-19 cases were among placebo recipients, and there were no significant safety concerns.
The main side effects were fatigue, muscle aches and injection-site pain after the vaccine's second dose, at rates that Hoge characterized as more common than with flu shots but on par with others such as shingles vaccine.
-- with files from CTV News --