Parents and their children wait for free measles vaccines during the Philippine Red Cross Measles Outbreak Vaccination Response at a slum area in Manila, the Philippines, Feb. 16, 2019. The Philippine Department of Health (DOH) reported this week that over 4,300 measles cases were confirmed from Jan. 1 to Feb. 13, 2019, with the number expected to increase in the coming days. (Xinhua/Rouelle Umali)