By Jack Davis
September 16, 2021 at 4:07pm
As if a day with 166,284 news coronavirus cases and 2,678 deaths from COVID-19 were not bad enough, a report has now emerged that the protection offered by one of the major vaccines used in the United States declines quickly.
“The first six months are great, but you can’t count on that being stable out to a year and beyond,” Moderna President Stephen Hoge said on a conference call with investors, according to Reuters.
Moderna said in a news release that there was a 36 percentage point difference in the rate of breakthrough infections between those who were vaccinated roughly 13 months ago and those vaccinated roughly eight months ago.
“The increased risk of breakthrough in this analysis quantifies the impact of waning immunity,” Moderna said, adding that the falloff in protection comes “between the median follow-up time of 8 months and 13 months since first dose. The Company believes this adds to evidence of potential benefit of a booster dose.”
“Manuscripts summarizing both findings have been posted to preprint servers and will be submitted for peer-reviewed publication,” the company said.