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RT [@jdickerson](https://twitter.com/jdickerson/status/1253166154450972673) https://t.co/ZObHJmAYA8 contagious almost two and a half days before symptoms appear — and that peak contagiousness occurs about 17 hours before people start feeling sick… the study estimated 44 percent of cases spread from person to person before symptoms appeared.
https://t.co/ZObHJmAYA8 contagious almost two and a half days before symptoms appear — and that peak contagiousness occurs about 17 hours before people start feeling sick… the study estimated 44 percent of cases spread from person to person before symptoms appeared.
— John Dickerson (@jdickerson) April 23, 2020
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