We already knew this, but here's a more recent study.
Naturally Immune People at Little Risk of Reinfection, Severe Disease From COVID-19: Study
Naturally Immune People at Little Risk of Reinfection, Severe Disease From COVID-19: Study
The studied population contracted COVID-19, the disease caused by the CCP (Chinese Communist Party) virus, between Feb. 28, 2020, and April 28, 2021.
Reinfections were counted if a person tested positive at least 90 days after their first infection.
After excluding approximately 87,500 people with a vaccination record, researchers found those with immunity from having recovered from COVID-19 had little risk of reinfection and severe cases of the disease.
Just 1,304 reinfections were identified. That means 0.4 percent of people with natural immunity and without a vaccination record got COVID-19 a second time.
The odds of severe disease were 0.1 percent that at primary infection, according to the study. Just four such cases were detected.
No cases of death were recorded among those who got infected a second time.
The study was published in the New England Journal of Medicine. It was funded by Weill Cornell Medicine–Qatar, Qatar’s Ministry of Public Health, the Hamad Medical Corporation, and Sidra Medicine
The researchers, Laith Abu-Raddad with Weill Cornell Medicine–Qatar and Dr. Robert Berollini with Qatar’s Ministery of Public Health, previously assessed the effectiveness of natural immunity against reinfection as being 85 percent or greater.
Reinfections were counted if a person tested positive at least 90 days after their first infection.
After excluding approximately 87,500 people with a vaccination record, researchers found those with immunity from having recovered from COVID-19 had little risk of reinfection and severe cases of the disease.
Just 1,304 reinfections were identified. That means 0.4 percent of people with natural immunity and without a vaccination record got COVID-19 a second time.
The odds of severe disease were 0.1 percent that at primary infection, according to the study. Just four such cases were detected.
No cases of death were recorded among those who got infected a second time.
The study was published in the New England Journal of Medicine. It was funded by Weill Cornell Medicine–Qatar, Qatar’s Ministry of Public Health, the Hamad Medical Corporation, and Sidra Medicine
The researchers, Laith Abu-Raddad with Weill Cornell Medicine–Qatar and Dr. Robert Berollini with Qatar’s Ministery of Public Health, previously assessed the effectiveness of natural immunity against reinfection as being 85 percent or greater.