What Typhoid Mary can teach us about COVID spread
A new study from the Centers for Disease Control and Prevention found that 59% of all COVID cases are spread from people without symptoms. The study says 35% of cases come from people who are pre-symptomatic, meaning they don't have symptoms yet, but eventually will develop them. Another 24% is estimated to be spread from asymptomatic people - those who carry the disease but never show signs of it.
Monday, WRL investigates the surprising facts behind the silent spread of covert. 19 on Reveals how a lesson from our past could help slow the transmission. Wre l investigates Monday at six.