Immunity to COVID-19 lasts at least six months when taking a vaccine or becoming infected with the disease, according to a scientific brief published by the Centers for Disease Control and Prevention (CDC).
The map looks at peer-reviewed and preprint data, as well as data not published by the CDC, to compare infection-induced immunity with vaccine-induced immunity.
The agency said available evidence shows that those who have been fully vaccinated and those who have previously had COVID-19 each have “a low risk of subsequent infection for at least six months.”
While there is a “wide range of antibody titers” in response to previous infection, “the completion of a primary vaccine series, particularly with mRNA vaccines, typically leads to a more consistent, higher titer antibody response,” the agency said in Friday’s announcement. Map.
The CDC has called on everyone, whether they have been infected, to be vaccinated because it was unclear how long the natural immunity lasts. However, some have argued that people who have recovered from COVID-19 have less need to be vaccinated.
A separate study released by the CDC on Friday, which was based on more than 7,000 people across nine states and 187 hospitals, showed that vaccination better protects against hospitalization than a previous infection.
In its brief, the CDC noted that there were insufficient data to extend the results related to infection-induced immunity to individuals with very mild or symptomatic infection or to children who were infected.
Both types of immunity provided high levels of protection, but not complete.
“Substantial immunological evidence and a growing body of epidemiological evidence indicate that post-infection vaccination significantly improves protection and further reduces the risk of re-infection, laying the foundation for CDC recommendations,” the agency said.