SAN FRANCISCO, CA – Health officials say an unidentified man had the measles when he may have exposed tens of thousands of people last week in and around San Francisco.
It happened on the Bay Area Rapid Transit System, the BART, when he commuted to and from work at LinkedIn, the social media site for professionals making connections, an irony in itself.
He also ate at the E & O Asian Kitchen in San Francisco.
California health officials now say the state has 110 confirmed cases of measles, as of Wednesday.
Many of those people can trace their measles back to Disneyland when an infected person from another country visited the Magic Kingdom in late December.
Seventeen states and the District of Columbia now report more than 120 cases measles.
That number includes nine people at a suburban Chicago day care. Seven of those are infants, too young to be vaccinated, which put them at high-risk for this highly infectious, and potentially fatal, disease.