One year after fleeing Myanmar, hundreds of thousands of Rohingya are stuck in camps in Bangladesh.
Karens say road work and the planned hydropower dams breach the ceasefire agreement.
Most of the children and teenagers have faced repeated displacement after being attacked by the Myanmar military, often under heavy artillery fire.
The army has a long history of violence towards ethnic civilian populations.
At Balukhali refugee camp, unclean water, cramped living quarters and squalid conditions create the prime environment for outbreaks of preventable diseases.
Accounts support accusations of widespread rape by Myanmar's army; the government rejects the claims.
Registering children and tracing their families is first priority for aid groups but with more than 500,000 arrivals, the task is daunting.
Air quality is a problem every year caused by excessive field-burning in the region during the dry season - though this year’s smoke arrived early.
Despite Thai government’s rush to aid tourist areas, relief was slow for hardest-hit villages, comprised largely of unregistered Burmese fishing laborers.
Human rights groups are focusing attention on ongoing forced detentions, restricted movements and intimidation of more than 120,000 displaced ethnic Rohingya.
Parasite adapts resistance to treatment in Cambodia, Vietnam, Thailand, Myanmar and Laos.
