Intro

It's called asymptomatic spread. Recently a scientist with the World Health Organization created confusion when she seemed to suggest it was "very rare." It's not, as the WHO attempted to clarify.

NPR science reporter Pien Huang explains what scientists know about asymptomatic spread, and what might have caused the WHO's mixed messages.

Email the show at shortwave@npr.org.

See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.

NPR Privacy Policy