Does Immunity To COVID-19 Decrease Over Time?
COVID-19Common questionDoes immunity to COVID-19 decrease over time?One of the main studies providing the evidence for CDC's recommendation was recently published in the New England Journal of Medicine [1]. It found that vaccine-induced immunity, while still quite protective against infection and severe illness from COVID-19, can wane after several months.
Can I get reinfected with COVID-19 after I have been vaccinated in Kentucky?
These findings suggest that among persons with previous SARS-CoV-2 infection, full vaccination provides additional protection against reinfection. Among previously infected Kentucky residents, those who were not vaccinated were more than twice as likely to be reinfected compared with those with full vaccination.
Reduced Risk of Reinfection with SARS-CoV-2 After COVID-19...
Can you get reinfected with COVID-19?
Based on what we know from similar viruses, some reinfections are expected. We are still learning more about COVID-19.
Reinfection with COVID-19
How long do antibodies last after COVID-19 infection?
Dr. Finstad: It appears that antibodies to SARS-CoV-2 last for at least several months. One SeroNet study found that people who had mild to moderate COVID-19 had neutralizing antibodies for at least 5 months. Another found similar results—people who recovered from COVID-19 had neutralizing antibodies for 6 months.
NCI's Research on COVID-19, Vaccines, and Antibodies