In a major new study, Dr. Laith Abu-Raddad of Weill Cornell Medicine-Qatar and colleagues revealed that natural immunity is 97% more effective against severe COVID-19.
According the recent study, so-called natural immunity continues to offer greater protection against severe illness than the COVID-19 vaccine.
Researchers in Qatar discovered that non-vaccinated individuals who recovered from COVID-19 infection had extremely strong protection against severe or fatal COVID-19.
“Effectiveness of primary infection against severe, critical, or fatal COVID-19 reinfection was 97.3 percent … irrespective of the variant of primary infection or reinfection, and with no evidence for waning. Similar results were found in sub-group analyses for those ≥50 years of age.”
After researching long-term natural immunity in unvaccinated individuals, Dr. Laith Abu-Raddad of Weill Cornell Medicine-Qatar and colleagues reported similar findings in sub-group analysis for those under 50 years of age.
According to previous research and real data, that percentage is higher than the COVID-19 vaccine’s level of protection.
For instance, Swedish researchers discovered in May that two doses of a vaccine were only 54% effective against the COVID-19-causing Omicron variant of the CCP (Chinese Communist Party) virus.
Meanwhile, South African researchers discovered that the AstraZeneca and Pfizer vaccines’ effectiveness peaked at 88 percent before rapidly dropping to 70 percent or lower.
According to study (pdf below) from Qatar, natural immunity “remains very strong, with no evidence for waning, irrespective of variant, for over 14 months” after a person catches their first infection.
On the website medRxiv, the study was posted before it had undergone peer review.
Due in large part to the fact that majority of the patients finally received a COVID-19 vaccine, few researchers have examined natural immunity over a prolonged period of time in uninfected individuals.
Over time, the effectiveness of the vaccines has decreased against both infection and severe illness, leading to recommendations for booster doses. Some Americans have even had five shots in as little as 10 months.
Natural Immunity Performs Poorly Against Omicron Reinfection
It was once claimed that the vaccinations provide nearly 100% protection from symptoms of illness. Following the advent of Omicron, they currently only offer less than 50% protection against infection after a brief period of time, even after booster doses.
This strain and its subvariants are prevalent in several nations, including Qatar and the United States.
It was once believed that natural immunity offered excellent defense against reinfection. However, the Qatari researchers discovered that it offers little defense against Omicron reinfection.
According to the study, pre-Omicron primary infection against pre-Omicron reinfection peaked at 90.5% and hovered around 70% by the 16th month. However, the effectiveness of pre-Omicron primary infection against Omicron reinfection was only 38%, however it was higher in those who contracted the original Wuhan strain or the Delta variation and lower in those who contracted the Alpha or Beta strains.
The shielding still seems to endure longer than that provided by vaccines, according to researchers, despite modeling indicating a reduction to 0 percent protection by 18 months.
They stated that while pre-Omicron natural immunity may remain for little over a year, vaccine immunity against Omicron subvariants only lasts for about six months.
The study’s limitations included variations in the testing frequency among the cohorts examined and the disappearance of the COVID-19-infected groups as a result of their deaths.
Read the study given below: