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CDC: Natural Immunity Offered Stronger Protection Against COVID Than Vaccines During Delta Wave

On Wednesday, the US Centers for Disease Control and Prevention (CDC) provided new research showing that, during the recent Delta wave, individuals who had previously contracted COVID-19 had more protection against the virus than those who had been vaccinated.

“Before the Delta variant, Covid-19 vaccination resulted in better protection against a subsequent infection than surviving a previous infection,” CDC epidemiologist Benjamin Silk told the Wall Street Journal. “When looking at the summer and fall of 2021, when Delta became predominant in this country, however, surviving a previous infection now provided greater protection.”

Both vaccinated individuals and those who had recovered from the virus showed significant defense, scientists added. (The CDC released its findings to reporters, but its research was not yet available online as of Thursday morning.)

Previous research suggests receiving vaccination after a COVID infection can offer additional protection against the virus.

“Recent research,” the Mayo Clinic says, “suggests that people who got COVID-19 in 2020 and then received mRNA vaccines produce very high levels of antibodies that are likely effective against current and, possibly, future variants. Some scientists call this hybrid immunity.”

Vaccine Mandates in Peril?

The findings are significant and dovetail with recent scientific research out of Israel that showed previous infection from COVID-19 conferred longer-lasting and more robust protection than vaccines against the Delta variant.

Following the Israel study, prominent scientists argued that the fact that natural immunity offered more protection than vaccines made mandatory vaccination unscientific and unethical.

“Prior COVID disease (many working class) provides better immunity than vaccines (many professionals), so vaccine mandates are not only scientific nonsense, they are also discriminatory and unethical,” wrote Harvard Medical School professor Martin Kulldorff, an epidemiologist and biostatistician.

The CDC’s findings were released days after the Supreme Court ruled that President Joe Biden’s vaccinate-or-test requirement for businesses with more than 100 employees was unconstitutional.

The high court’s decision prompted some businesses, including Starbucks, to scrap their vaccine mandates for employees.

“We respect the Court’s ruling and will comply,” John Culver, COO and group president for North America at Starbucks, told employees on Tuesday.

Despite the protection offered by previous COVID infection, many public officials and countries have been reluctant to recognize natural immunity.

Novak Djokovic, the world’s top-ranked tennis player, recently had his visa seized by Australian authorities when he arrived (unvaccinated) to play in the Australian Open, even though he was initially granted a medical exemption because of a recent COVID infection. Meanwhile, Austria’s conservative government recently announced it will make vaccination compulsory for adults, who will face steep fines—up to 3600 euros—if they fail to comply, even if they have already had the virus.

In the United States, universities have been inclined to expel students not considered “fully vaccinated,” which in some cases reportedly includes students who’ve had multiple vaccine shots, have previously had COVID, and have received a medical exemption from a physician.

Recent evidence, however, suggests the reluctance to treat individuals who’ve had COVID as “fully vaccinated” may be waning. The NCAA, for example, recently announced in its winter guidelines that athletes who previously had COVID will be considered “fully vaccinated” if the infection took place within three months.

The CDC’s announcement that previous infection offered more protection than vaccination against the Delta variant is likely to fuel calls to end vaccine mandates, particularly for individuals who’ve already been infected.

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Content syndicated from Fee.org (FEE) under Creative Commons license.

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Jon Miltimore

Jonathan Miltimore is the Managing Editor of FEE.org. His writing/reporting has been the subject of articles in TIME magazine, The Wall Street Journal, CNN, Forbes, Fox News, and the Star Tribune. Bylines: Newsweek, The Washington Times, MSN.com, The Washington Examiner, The Daily Caller, The Federalist, the Epoch Times. He previously served in editorial roles at The History Channel magazine, Intellectual Takeout, and Scout. He is an alumni of the Institute for Humane Studies journalism program, a former reporter for the Panama City News Herald, and served as an intern in the speechwriting department of George W. Bush.

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