Protection against symptomatic COVID-19 begins to decrease about one month from initial vaccination, while immunity against severe COVID-19 remains high for about six months, according to a recent study by scientists at Penn State College of Medicine.In the largest study to date, researchers analyzed data from 7 million unvaccinated and vaccinated individuals aged 12 and older.The researchers determined the vaccines provided significant protection against COVID-19, but their effectiveness decreased over time.The findings showed that after full vaccination, immunity against COVID-19 infection decreased from 84% after the first month to 22% after five or more months.Those who received the Moderna vaccine had the highest levels of protection, according to the findings.Researchers said vaccines remained 90% effective against severe COVID-19 for up to six months. But protection against severe COVID-19 was lower for individuals who received the Johnson & Johnson vaccine.The study also found immunity against COVID-19 decreased more rapidly for people 65 or older, no matter which vaccine they received.The researchers didn’t have data beyond six months, and the study didn’t include data on boosters.Read the full study here.Watch the video above for the full story.
Protection against symptomatic COVID-19 begins to decrease about one month from initial vaccination, while immunity against severe COVID-19 remains high for about six months, according to a recent study by scientists at Penn State College of Medicine.
In the largest study to date, researchers analyzed data from 7 million unvaccinated and vaccinated individuals aged 12 and older.
The researchers determined the vaccines provided significant protection against COVID-19, but their effectiveness decreased over time.
The findings showed that after full vaccination, immunity against COVID-19 infection decreased from 84% after the first month to 22% after five or more months.
Those who received the Moderna vaccine had the highest levels of protection, according to the findings.
Researchers said vaccines remained 90% effective against severe COVID-19 for up to six months. But protection against severe COVID-19 was lower for individuals who received the Johnson & Johnson vaccine.
The study also found immunity against COVID-19 decreased more rapidly for people 65 or older, no matter which vaccine they received.
The researchers didn’t have data beyond six months, and the study didn’t include data on boosters.
Watch the video above for the full story.
