Pre-school children line up to be vaccinated during a UNICEF assisted immunization drive in Maracaibo City, Venezuela. ©
Pre-school children line up to be vaccinated during a UNICEF assisted immunization drive in Maracaibo City, Venezuela. © Susan Markisz UNICEF
Pre-school children line up to be vaccinated during a UNICEF assisted immunization drive in Maracaibo City, Venezuela. © Susan Markisz UNICEF