Neither of these are definitive, but whether immunity lasts three months, one year, or even slightly longer, the evidence points to the conclusion that immunity protection is temporary.
The science suggests that coronavirus contraction (and thus likely vaccination, too) provides what is known as “transient immunity.”
Chiu added that we already have precedents set for this type of virus, so it’s not unheard of for a vaccine to require patients to receive regular updates and boosters. For example, the influenza vaccine is given every year. Physicians recommend that people receive tetanus shots every 10 years after the initial tetanus series. For diphtheria, booster shots are recommended every 10 years, too.A COVID vaccine, every year, for the rest of your life? It’s starting to look that way | Salon.com