John, here is a link to the WSJ article to which you have been referring.Here is the headline:
Evidence is building that immunity from Covid-19 infection is at least as strong as that from vaccination. Scientists are divided on the implications for vaccine policy.
Some tidbits from article:
The role of immunity from infection, which scientists have been trying to figure out since the outset of the pandemic, has gained fresh significance amid the controversy over vaccine mandates.
Vaccines typically give rise to a stronger antibody response than infection, which might make them better at fending off the virus in the short term. Infection triggers a response that evolves over time, possibly making it more robust in the long term. A combination of both types appears to be stronger than either alone. But the jury is out on whether one form is stronger than the other, and whether their relative strength even matters for vaccine policy.
Immunity from infection hasn’t been studied as extensively as vaccine-mediated immunity. But over the course of the pandemic, clues have emerged to suggest the two are at least equivalent.
A recent Israeli study found that people who had been vaccinated with two shots of the vaccine developed by Pfizer Inc. and BioNTech SE—the most commonly used there—were 13 times more likely to later get infected than those with a prior infection. The study, which hasn’t been peer reviewed, tracked confirmed infections between June and August this year for people who had been either vaccinated or infected in January or February.
In reading the article it looks as if the jury of experts is still out on the subject of vaccinations versus natural immunity. Didn't see any info on the 48 million who have acquired natural immunity.