CDC confirms first 'unknown' coronavirus case in California that could raise concerns about the threat of the virus

The CDC on Wednesday confirmed an infection in California that would represent the first U.S. person to contract the virus from an "unknown" origin.

CDC confirms first 'unknown' coronavirus case in California that could raise concerns about the threat of the virus

CDC confirms first 'unknown' coronavirus case in California that could raise concerns about the threat of the virusThe CDC on Wednesday confirmed an infection in California that would represent the first U.S. person to contract the virus from an "unknown" origin.