Limited human-to-human bird flu transmission may have occurred in Pakistan, but no new infections have been reported for two weeks and there appears to be no threat of further spread, a top World Health Organization official said.

Building a stockpile of bird flu vaccine would help ensure poor countries do not lose out if a flu virus starts killing people worldwide, the World Health Organization's top flu official said Friday.

Indonesia agreed to resume sharing its bird flu virus with the World Health Organization Friday under condition that developing countries will have equal access to an affordable vaccine, officials from both sides said.

No one knows if the H5N1 bird flu virus will spark a human pandemic but the money and measures being put in place in case it does will benefit public health, a WHO official said on Tuesday.

By Maggie Fox WASHINGTON (Reuters) - New regulations aimed at making it easier for countries to share information about disease outbreaks will help fight avian influenza, a senior World Health Organization official said on Monday.