The girl is believed to have contracted the disease after coming into contact with sick poultry. Her mother died in early January of severe pneumonia, which is one of the symptoms of bird flu, but the deadly virus was not officially confirmed as a cause of death.
Eight people have been officially diagnosed with avian influenza in 2009 in China, five of them have died. Two others are currently receiving treatment for the deadly virus.
Over 70% of all bird flu cases occur in China in winter and spring. The virus, which was first detected in 2003, has been officially confirmed in 404 people worldwide, 254 of whom have died, according to WHO statistics.
Of the 38 cases confirmed to date in China, 25 have been fatal, the World Health Organization has reported.