CDC-funded study: In May, U.S. reached level that some experts say is ‘herd immunity’ against Covid-19
Research shows the U.S. had reached what some scientists believed to be “herd immunity” status against Covid-19 last May, with more than 80% of the population immune to Covid either through natural infection or vaccination. And the actual number of immune Americans may be higher. That’s because the new study, funded by the Centers or […]
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