Islamabad; Dec 18 (Monitoring Desk) -- A campaign to eradicate polio from the northwest tribal region of Pakistan is on hold after fatal attacks on health workers vaccinating children, the Government said Tuesday.
Six polio vaccination workers were killed in attacks in Pakistan since Monday, the World Health Organization and Pakistani police told CNN Tuesday.
Another attack last July wounded a WHO doctor and his driver while they worked on the polio campaign in Karachi.