If you read that article you linked you would see in section 5
Quote:
So then what is the best way to stop the coronavirus from transmitting until a safe and effective vaccine is widely available? “Masks,” Mokdad says. “For the first time in our history as humans, we have the chance to save so many lives by simple, cheap, non-pharmaceutical [masks].”
"It requires people to not just think of themselves and to think of what we can do to help be mindful and responsive of other people's needs,” Levin says. “And if we can do that, I think we can hang on until the point that we have some good primary prevention or we have a treatment that works for everybody."
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They also clearly explain how very difficult it is to obtain herd immunity without a vaccine......
In fact, the article you linked actually does not support the comments you made Caroline.
To read more please go to
Experts on The Prospects for Herd Immunity and COVID-19