jason1637 on 14 March 2020
It appears that a Massachusetts coronavirus cluster with at least 82 cases was started by people who were not yet showing symptoms, and more than half a dozen studies have shown that people without symptoms are causing substantial amounts of infectionhttps://t.co/OnIEN4OnON
— CNN International (@cnni) March 14, 2020
People who seem to be healthy can still pass on the virus.
