Fact check: The theory that SARS-CoV-2 is becoming milder
There's a growing narrative in the mainstream media, on social media — maybe even at your dinner table. That is: The coronavirus SARS-CoV-2 is weakening and evolving into a less deadly virus. In the future, each new variant that crops up will cause milder illness than the previous variant.
"There's this story that we're going to have variants that are progressively less severe," says Dr. Roby Bhattacharyya, who's an infectious disease specialist at Massachusetts General Hospital and Harvard Medical School.
But that's completely untrue, Bhattacharyya says. "It's comforting to think there might be some tendency for SARS-CoV-2 to evolve toward a milder form. That's not what we're seeing here."
The origins of the mild theory
This narrative has
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