• Disease hovers over Pakistan's flood-stricken children

As Pakistan's floodwaters rushed into Bakhmina Said's mud-brick home, she grabbed medical records of her daughter's heart condition, put them in a metal trunk and headed to high ground.

Eighteen days later, one-year-old Naeema sleeps on a mat in sweltering heat at a fly-infested camp, with no fan, no chance of seeing a cardiologist anytime soon and at risk of catching other potentially fatal diseases in cramped, un-hygienic conditions.

"Who will treat her? The doctors said she has a hole in the wall of her heart," said Said, also worried because one of her six other children has fallen ill after the floods.

The United Nations has warned that up to 3.5 million children could be in danger of contracting deadly diseases carried through contaminated water and insects in a crisis that has disrupted the lives of at least a tenth of Pakistan's 170 million people.

It's a long list of growing risks -- endemic watery diarrhea, endemic cholera, endemic upper respiratory infections.

At a camp in northwest Pakistan set up by a U.K.-registered Islamic charity, doctors and workers scramble to protect children -- many of whom don't grasp the magnitude of the disaster but are the most vulnerable.

Some are brought here for daily treatment, others languish with hundreds of others displaced by the worst floods in Pakistan's history in a college on the camp's grounds.

It's a scene that's being played out across affected areas. Pakistan's worst floods in decades have killed up to 1,600 people and made two million homeless. The United Nations has reported the first case of cholera, but only a small fraction of the funds needed for initial relief has arrived.

So far the biggest problem at the camp is scabies, a skin infection that is caused by mites that burrow and produce pimple-like irritations. One of the biggest potential killers - diarrhea - is a constant worry.