This is what we believe now? Grief.
But there are other rumors about coronavirus.
That it can be prevented by drinking bleach. (BIG NO — very dangerous — though QAnon conspiracy theorists also believe that bleach is an effective vaccine against cancer, AIDS, and autism).
https://www.northjersey.com/story/news/2020/03/06/coronavirus-cure-yet-undiscovered-but-past-diseases-show-toll-of-bad-science/4964858002/