WHO says asymptomatic spread of coronavirus is rare, but experts say pre-symptomatic spread is still a big concern

Name: WHO says asymptomatic spread of coronavirus is rare, but experts say pre-symptomatic spread is still a big concern
Uploaded: 2020-06-09T14:45:33Z
Duration: 2 min 42 s
Description: Jonathan Serrie reports from Atlanta with an update as voters head to the primary polls in five states.