That is not true. A study last month showed people infected with this virus back in March still have robust antibodies. Antibodies from any virus do tend to decline over time but antibodies are not the long term immunity to viruses. T-cell immunity is different and lasts for years, decades or a lifetime. People who had the first SARS virus tested still have immunity 17 years later.CDC provides credible COVID-19 health information to the U.S.www.cdc.gov
FACT: People who have gotten sick with COVID-19 may still benefit from getting vaccinated
Due to the severe health risks associated with COVID-19 and the fact that re-infection with COVID-19 is possible, people may be advised to get a COVID-19 vaccine even if they have been sick with COVID-19 before.
At this time, experts do not know how long someone is protected from getting sick again after recovering from COVID-19. The immunity someone gains from having an infection, called natural immunity, varies from person to person. Some early evidence suggests natural immunity may not last very long.
We won’t know how long immunity produced by vaccination lasts until we have a vaccine and more data on how well it works.
Both natural immunity and vaccine-induced immunity are important aspects of COVID-19 that experts are trying to learn more about, and CDC will keep the public informed as new evidence becomes available.