International aid to bring the cholera epidemic in Zimbabwe under control is trickling into the country two days after the Harare government declared a national emergency, sources said Friday, with further pledges of assistance from Botswana and other countries.

An official at the World Health Organization in Geneva said 575 people had died to date in the epidemic and that a total of 12,700 cases had been reported nationwide.

Spokesman Fambai Ngirande of the National Association of Non-Governmental Organizations told reporter Patience Rusere of VOA's Studio 7 for Zimbabwe that while help is on the way the government has yet to address the most critical factor ? providing clean water.

The United States Thursday expressed deep concern about the cholera outbreak and US aid officials are considering a response, as VOA's David Gollust reported.

More reports from VOA's Studio 7 for Zimbabwe...