Natural immunity to covid is powerful.

Policymakers seem afraid to say so.

People making decisions about their health deserve honesty from their leaders.

By Marty Makary

Makary is a professor at the Johns Hopkins School of Medicine and Bloomberg School of Public Health, editor-in-chief of Medpage Today, and author of “The Price We Pay: What Broke American Health Care — and How to Fix It.”

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More than 15 studies have demonstrated the power of immunity acquired by previously having the virus. A 700,000-person study from Israel two weeks ago found that those who had experienced prior infections were 27 times less likely to get a second symptomatic covid infection than those who were vaccinated. This affirmed a June Cleveland Clinic study of health-care workers (who are often exposed to the virus), in which none who had previously tested positive for the coronavirus got reinfected. The study authors concluded that “individuals who have had SARS-CoV-2 infection are unlikely to benefit from covid-19 vaccination.” And in May, a Washington University study found that even a mild covid infection resulted in long-lasting immunity.

So, the emerging science suggests that natural immunity is as good as or better than vaccine-induced immunity. That’s why it’s so frustrating that the Biden administration has repeatedly argued that immunity conferred by vaccines is preferable to immunity caused by natural infection, as NIH director Francis Collins told Fox News host told Bret Baier a few weeks ago. That rigid adherence to an outdated theory is also reflected in President Biden’s recent announcement that large companies must require their employees to get vaccinated or submit to regular testing, regardless of whether they previously had the virus.

Downplaying the power of natural immunity has had deadly consequences. In January, February and March, we wasted scarce vaccine doses on millions of people who previously had covid. If we had asked Americans who were already protected by natural immunity to step aside in the vaccine line, tens of thousands of lives could have been saved. This is not just in hindsight is 20/20; many of us were vehemently arguing and writing at the time for such a rationing strategy.

One reason public health officials may be afraid to acknowledge the effectiveness of natural immunity is that they fear it will lead some to choose getting the infection over vaccination. That’s a legitimate concern. But we can encourage all Americans to get vaccinated while still being honest about the data.