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Measles health alert: Infected person may have exposed others at some San Francisco locations
San Francisco Chronicle

A person with measles may have exposed others to the infection at several locations around San Francisco — including Muni and Caltrain — over a three-day period last week, public health officials said Tuesday.

The risk to most individuals of contracting measles from this person is low, authorities said, since San Francisco has high rates of vaccination against the illness. But anyone who has not been vaccinated, or does not know his or her vaccination status, could be vulnerable.