The Global Times and other Chinese media outlets have announced free measles (ma(2) zhen(3), 痲疹) shots for kids from September 11-20 for "children from 8 months old to 14 years old at 535 vaccination sites and 178 hospitals" due to an anticipated outbreak this fall.
Expat kids are also eligible for the free shots, however they will only be administered for free at public hospitals and clinics like Peking Medical Union Hospital, Tongren Hospital and the Sino-Japanese Friendship Hospital (call 6422 2973 for the immunization dept), and not at private clinics like Beijing United Family Hospital and Beijing International SOS Clinic where they can be administered for a fee.
According to the Global Times article, measles cases have been declining for years, but is still a leading cause of death among children around the world.