Enlarge / UC Davis Medical Center, where the patient with a COVID-19 infection of unknown origin is being treated. (credit: UC Davis)
A Northern California resident has contracted the new coronavirus despite having no known exposure through travel or obvious contact to an infected person—a first for the US.
The US Centers for Disease Control and Prevention confirmed the case late Wednesday, saying, “It’s possible this could be an instance of community spread of COVID-19,” meaning that the virus may be moving through members of the general US public undetected.
“It’s also possible, however, that the patient may have been exposed to a returned traveler who was infected,” the agency said.
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