Natural COVID-19 Infection Protects Better against the Delta Variant than the Pfizer Vaccine Israeli Study Shows

According to preliminary results published on the medRxiv platform, people that were infected with Covid-19 and recovered are better protected against the Delta variant than those vaccinated with the Pfizer-BioNTech’s vaccine.

The study, in which 779,000 people in Israel participated, is the largest study to date comparing natural immunity and immunity through vaccination. It showed that patients vaccinated with two doses of Pfizer’s vaccine (the only vaccine used in Israel) are 13 times more likely to be infected with the Delta variant than people infected with the virus in the January or February 2021 waves. The risk is still 5.96 times higher compared to people affected by the 2020 waves, where other variants circulated, and 7.13 times higher for symptomatic forms. When people were both affected by the virus and vaccinated with a single dose, the risk was only 0.53 times higher.Pfizer Logo

Read Also: A Vaccine against Most Coronaviruses May be Possible Study Shows

“This result may be explained by a more complete immune response resulting from natural infection,” the authors suggest. This difference appears to be specific to the Delta variant, as another study published in Nature on August 26, looking only at the Alpha and Beta variants, claims that serums from cured people provide “significantly less” protection than those from vaccinated people (this study, however, does not look at real data, but at laboratory measurements of antibody effectiveness). There may also be some bias in the statistics, such as asymptomatic people being counted less (since only those who tested positive are evaluated).

Read Also: University of Arizona Study Shows That COVID-19 Kills Like a Venom That Spreads through the Body

This does not mean that it is better to wait until you are naturally infected. According to the latest data, an unvaccinated person is seven times more likely to be hospitalized than a vaccinated person. “Taking the risk of dying in the name of immunity is a very bad calculation,” concludes Robert Schooley of the University of California.

In short, getting vaccinated is still the wisest move in order to avoid serious complications. Also, Pfizer will most likely release in the near future an updated version of its vaccine to protect against whatever strains the pandemic keeps throwing at us.


Comparing SARS-CoV-2 natural immunity to vaccine-induced immunity: reinfections versus breakthrough infections

Past Infection May Better Protect Against Delta Than Vaccine, but …

Neutralization of SARS-CoV-2 variants by convalescent and BNT162b2 vaccinated serum

Articles you may like:

Police Recruitment Poor Standards: Physically Unfit Cops Are More Likely to Use Lethal Force

The Reasons Why Israel a Highly Vaccinated Country Has One of the Highest Infection Rates in the World

Is the Convenience of Using Toilet Paper Worth the Negative Impact They May Have On Your Health?

Chronic Pain Can Lead To Anxiety and Depression According to NeuRA Study

Chaga Mushrooms Health benefits: What does the science say?

Brain Health: Sleep Deprivation Negatively Affects Memory Study Shows

Giving Employees the Possibility to Take a 30 Minute Nap Improves Productivity

Global Food Security: Climate Change Is Likely to Cause More Plant Diseases Which Will Affect Crop Yield

Self Improvement: When Positive Thinking Becomes Unconducive to Success and Happiness

Vaccination rates below 90% Could Paradoxically Promote the Emergence of Resistant Variants

Nightmare Scenario: Could the Current Poorly Implemented Vaccination Campaign Lead to More Deadly SARS-CoV-2 Strains

Drinking Too Much Coffee Can Reduce Brain Size, and Cause Dementia

Possible Causes of the Sudden Fall In COVID-19 Infections in the UK and Europe

SARS-CoV-2 Transmissibility: Can You Really Catch COVID-19 through Flatulence (Farts)?

Moderna and Pfizer’s mRNA Vaccines Do Not Make Straight Men Gay

Researchers to Start Testing Male Contraceptive Gel

Gilmore Health News

Coronavirus: The Real and False Side Effects of COVID-19 Vaccines

Guillain-Barré Syndrome Observed after the First Dose of the AstraZeneca Vaccine


Genf20 Plus

Growth Factor Plus Reviews




Want to Stay Informed?

Join the Gilmore Health News Newsletter!

Want to live your best life?

Get the Gilmore Health Weekly newsletter for health tips, wellness updates and more.

By clicking "Subscribe," I agree to the Gilmore Health and . I also agree to receive emails from Gilmore Health and I understand that I may opt out of Gilmore Health subscriptions at any time.