Bird Flu in China mutates, is transmitted from person to person.
Chinese media circulated gruesome news that Chinese doctors fear the H7N9 virus has mutated and is transmitted from person to person.
The representative of WHO China, Michael O'Leary, confirmed this and throw a bomb that half of the infected patients had no known contact with poultry and most obvious potential source is the transmission from person to person.
Until recently it was almost excluded or at least show was a rarity.
China announced the first case of human infection of H7N9 in late March.
It's been an outbreak of avian flu.
Chinese authorities have notified WHO of six new cases, bringing the total number to 102. Of these, 70 are still in the hospital and 12 are released. Five of the new cases are in Zhejiang province and one in Shanghai.
There are also two new deaths.
The source of infection was identified, expected and other cases of human infection with the virus in China.