A nationwide polio vaccination campaign started on April 29 in Afghanistan, Taliban authorities announced. The Taliban-run Health Ministry said the four-day campaign will cover 31 of Afghanistan's 34 provinces, while immunizations will start later in the remaining three -- Ghor, Daikundi, and Bamyan -- due to heavy rains and cold weather. Besides vaccines, children will also receive doses of vitamin A to increase their resistance to the infectious disease, the ministry said. Pakistan and Afghanistan are the only countries in the world where polio has not been completely eradicated. To read the original story by RFE/RL's Radio Azadi, click here.