Previous COVID-19 Infection Protects Against Delta Variant Better Than Pfizer Vaccine: Study
Previous COVID-19 Infection Protects Against Delta Variant Better Than Pfizer Vaccine: Study

By Mimi Nguyen Ly

People who have previously recovered from COVID-19 have been observed to have better protection against the Delta variant of the CCP virus compared to those who received the Pfizer–BioNTech vaccine, according a study from Israel.

“This analysis demonstrated that natural immunity affords longer lasting and stronger protection against infection, symptomatic disease, and hospitalization due to the Delta variant,” researchers from Maccabi Healthcare and Tel Aviv University said.

“This is the largest real-world observational study comparing natural immunity, gained through previous SARS-CoV-2 infection, to vaccine-induced immunity, afforded by the BNT162b2 mRNA vaccine,” they added.

Natural immunity refers to the immunity a person retains after having recovered from a virus, in this case the CCP (Chinese Communist Party) virus, also referred to as the novel coronavirus.

A preprint of the study, which is yet to be peer-reviewed, was published on medRxiv on Aug. 25.

Researchers used data from Maccabi Healthcare Services, Israel’s second-largest health fund, between March 1, 2020, to Aug. 14, 2021. They conducted statistical analysis on those eligible for three study groups: people who received two doses of the Pfizer vaccine; those unvaccinated who previously survived a bout of COVID-19; and those who were previously infected and later received one dose of the vaccine.

The outcomes were observed for the period between June 1 and Aug. 14, 2021, which corresponds to the time that the contagious Delta variant became the dominant CCP virus strain in Israel.

Researchers found that people fully vaccinated with the Pfizer vaccine were 13.06 times more likely to contract the Delta variant of the CCP virus, and 27.02 times at risk of symptomatic disease, compared to those who had recovered from a previous infection of COVID-19. The figures apply when comparing cases where the first vaccination or infection occurred between January and February 2021.

When researchers compared all cases of prior infection between March 2020 and February 2021 with vaccinations between January to February 2021, they found that the vaccinated cohort was 5.96 times more likely to contract the Delta variant, and 7.13 times more at risk for symptomatic disease, compared to those previously infected.

The results suggest that natural immunity gained from having survived a previous infection of COVID-19 may wane over time against the Delta variant, the authors wrote.

Those vaccinated were at a greater risk of COVID-19-related hospitalizations compared to those who were previously infected, the authors also noted. They added that being 60 years of age or older increased the risk of infection and hospitalization.

Read More: More Than Half of Seriously Ill COVID-19 Patients in Israel Are Fully Vaccinated Majority of Hospitalized COVID-19 Patients at Hospital in Israel Are Fully Vaccinated: Doctor

In another analysis, the authors compared previously infected people with those who were both previously infected and had one dose of the vaccine. They found that the group with one vaccine dose was marginally, or 0.53 times, less likely to be reinfected with the Delta variant.

The authors said the results suggest that previously-infected people “seem to gain additional protection from a subsequent single-dose vaccine regimen,” but they “could not demonstrate significance” in the cohort.

They acknowledged a number of limitations, including that the study only observed the protection of the vaccine or natural immunity against the Delta variant. The study furthermore only observed the protection of the Pfizer vaccine and did not look at other vaccines or the effects of a third dose, or booster, of the Pfizer vaccine.

Read More: Israel Lowers Age of Eligibility for COVID-19 Vaccine Booster to 30: Health Ministry

They also noted that because COVID-19 testing such as PCR was not required to be performed by protocol in Israel, the true number of asymptomatic infections may have been under-represented in the study, because such individuals often do not go and get tested.

The study authors also acknowledged that certain health behaviors such as social distancing and the wearing of masks may play a confounding role in the study.

Since the Delta variant began to spread starting around June, the Israeli health ministry reported a drop in the vaccine’s efficacy against infection twice—in early and late July—as well as a slight decrease in its protection against severe disease.

Scientists and agencies continue to probe whether a third dose is necessary. The country on Aug. 24 has expanded the age of eligibility for a third dose of the Pfizer vaccine to those over 30 years old.

Amid the ongoing spread of the Delta variant, Israel has reimposed indoor mask wearing, limitations on gatherings, and ramped up rapid testing, as well as reinstated its “Green Pass” COVID-19 vaccine passport program in late July.

Affiliate News Feeds

  • Reuters
  • Washington Examiner
  • The Federalist
  • The Epoch Times
  • The Guardian
  • The Gateway Pundit
  • Judicial Watch

By Patricia Tolson A new survey reveals that the majority of Americans do not trust the integrity of America’s elections. According to a poll conducted among likely General Election voters between Nov. 16–20… [...]

By Louise Chambers When her neighbor, a farmer, fell ill suddenly, a Minnesota teen volunteered to help him tend the land. The farmer was beyond grateful for the support, and the teen… [...]

Sen. Marco Rubio (R-FL) announced on Tuesday that he won’t support legislation to prevent an economically calamitous rail strike if it isn’t supported by the union workers. [...]

The Pentagon believes the Chinese military’s nuclear arsenal can more than triple by 2035. [...]

Abusers in homes across the nation and worldwide have utilized chemical abortion pills in the same way that Herring allegedly did. [...]

Even amid the hedonistic holiday mania, people are still eager to have a fulfilling and joyful Christmas. Christians can help. [...]

Philadelphia District Attorney Larry Krasner “Ignores reality and claims Philadelphia does not have a crisis of crime,” according to the third and final report of the Pennsylvania House Select Committee… [...]

U.S. Rep. Matt Cartwright (D-Pa.) on Tuesday sued the board of elections of a Pennsylvania county that didn’t have enough paper ballots on Election Day for failing to certify his victory by… [...]

Antibody therapy lecanemab removes clumps of protein called beta amyloid that builds up in brainResearchers have hailed the dawn of a new era of Alzheimer’s therapies after a clinical trial… [...]

Groups C and D conclude: check the latest permutationsDaily briefing: the joy of Mbappé, Argentina’s escape planGet in touch: email Martin with your thoughtsThe row about concussion substitutions at this… [...]

As the war against censorship seeps into nearly every facet of our lives, best selling rapper Bryson Gray will soon find out if his stand for free speech and artistic… [...]

While the corporate media such as the New York Times and Wall Street Journal have been writing puff pieces about mega democrat donor Sam Bankman-Fried, independent journalist Ben Armstrong better… [...]

Though years ago India passed a sweeping law giving transgender people rights—and prohibiting discrimination in education, employment, and healthcare—the Biden administration is spending American taxpayer dollars to counter stigma and… [...]

(Washington, DC) – Judicial Watch announced today that it filed a Freedom of Information Act (FOIA) lawsuit against the Department of Homeland Security (DHS) for all communications between the Secret… [...]

NH Politician

NH POLITICIAN is owned and operated by USNN World News Corporation, a New Hampshire based media company specializing in the collection, publication and distribution of public opinion information, local,...