Yemen launches door-to-door polio immunization for over 4 mln children
SANAA, Nov. 28 (Xinhua) -- Yemen's health authorities on Saturday launched a polio vaccination campaign for more than 4 million children in the north of the war-torn country.
The three-day campaign is supported by the World Health Organization, the UNICEF and other international aid agencies, the local health authorities said in a statement.
The door-to-door immunization targets children under the age of five.