Source: World Health Organization
China has confirmed the first human case of H7N4 bird flu, prompting Hong Kong to issue a health warning for those travelling to the mainland during the busy Lunar New Year holiday.
The World Health Organization says it has noticed changes in the bird flu virus now spreading in China, but says the risk of the disease spreading easily between people remains low.
China is ordering the closure of live poultry markets in its south-central regions as it grapples with the worst outbreak of bird flu in years that has killed at least 87 people.
China's national health authority says an outbreak of bird flu killed 79 people around the country in January, the highest monthly death toll from the H7N9 strain in at least three years.