A plant infection blamed for large drop in production , according to the U.N. Helmand and Kandahar provinces were hit `` particularly hard . '' The UN said that a total of 1,360 people have been infected with hepatitis B since last year - up from just over 1,000 at the start of this year. `` The decrease was largely due to a plant infection hitting the major poppy-crop growing provinces of Helmand and Kandahar particularly hard , '' the report said . Afghanistan produces 92 percent of world opium , according to U.N. report .
A plant infection blamed for large drop in production , according to the U.N. Helmand and Kandahar provinces were hit `` particularly hard . '' The UN said that a total of 1,360 people have been infected with hepatitis B since last year - up from just over 1,000 at the start of this year. Afghanistan produces 92 percent of world opium , according to U.N. report .