Vaccine protection against COVID-19 short-lived, booster shots important, new study says

Since COVID-19 vaccines first became available to protect against infection and severe illness, there has been much uncertainty about how long the protection lasts, and when it might be necessary for individuals to get an additional booster shot.

source https://medicalxpress.com/news/2022-07-vaccine-covid-short-lived-booster-shots.html