China remains baffled on how the bird flu virus was transmitted between its latest victims.

This as the surviving patient, surnamed Lu, 52, was discharged from an undisclosed local hospital on Dec. 26, state-run Xinhua news agency reports

More than 600,000 chickens were culled at a Russian farm on Tuesday after tests confirmed an outbreak of the avian influenza virus.

The chickens at the Gulyai-Borisovskaya farm in the Rostov-on-Don region were destroyed to prevent the H5N1 virus from spreading

At least two Pakistanis have died in a fresh outbreak of avian influenza close to the country's "poultry belt," the United Nations World Health Organization (WHO) has reported.

Pakistani health officials informed WHO of eight suspected human cases of infection with the H5N1 virus - the virus responsible for outbreaks of bird flu around the world in recent years - in the area around the city of Peshawar

Bird flu has resurfaced in different parts of Asia, with human deaths reported in Indonesia, Burma, Pakistan and China and fresh outbreaks plaguing other countries during the winter months when the virus typically flares, officials and scientists say.

Pakistan confirmed the country's first death from the bird flu virus on Saturday, the health ministry says in a press statement

Military-run Burma, officially known as Myanmar, on Saturday reported its first case of a human infected with bird flu, according to health official and state media reports.

A seven-year-old girl was discharged from the hospital in Myanmar's eastern Shan state this week after being treated for the deadly H5N1 bird flu virus, a health official of the Burmese livestock department said. "She is the first human case (of bird flu)