BART riders may have been exposed to measles

FYI, Bay Area readers — if you rode BART between February 4 and February 7, you may have been exposed to measles by an unvaccinated student who picked up the disease on a trip to Asia. Symptoms are similar to those of a cold, plus a rash. If this matches anything you (even adults who have been vaccinated could probably use a booster) or your children have been experiencing, call a doctor.