Photos: In Vietnam, the after-effects of Agent Orange persist

Le Dang Ngoc Hung, 16, who suffers from mental and physical health problems, lies in his family's house near Danang, April 12, 2015. His grandfather, a former soldier with the South Vietnamese army, said he was exposed to Agent Orange more than once. Health officials told him that two of his grandson’s disabilities are due to his exposure to the defoliant. Damir Sagolj / Reuters

Doan Thi Hong Gam, 38, is kept isolated because of aggressive behavior linked to mental health problems. Her father, who suffers from serious health problems, said he was exposed to Agent Orange while fighting for the North Vietnamese Army in the central highlands. Damir Sagolj / Reuters

Le Van Dan, center watchers after his disabled grandson Le Van Tam, left, while his daughter feeds another sick grandson in their family house in Phuoc Thai village. a A former artillery soldier with the South Vietnamese army, Le Van Dan said he was exposed to Agent Orange more than once. Damir Sagolj / Reuters

The U.S. and Vietnam have been cleaning the area near Danang Airport where Agent Orange was stored during the Vietnam War, above, since 2012. Damir Sagolj / Reuters

Lai Van Manh’s father, a former intelligence officer in the North Vietnamese army, said that he served in an area that was heavily contaminated by Agent Orange during the war. He is pictured at the family home in Tuong An village. Both he and his brother suffer from physical and mental disabilities. Damir Sagolj / Reuters

Disabled children suffering from various mental and physical problems wait for lunch at Peace Village in Tu Du hospital in Ho Chi Minh City, April 14, 2015. The facility houses many children whose illnesses have been linked to Agent Orange. Damir Sagolj / Reuters

Pham Thi Phuong Khanh is fed by a hospital staff member at the Peace Village in Tu Du hospital in Ho Chi Minh City April 14, 2015. Both of Pham Thi Phuong Khanh's parents were exposed to Agent Orange during the war. Damir Sagolj / Reuters