China hit by more bird flu cases

Public health workers on high alert in Shanghai - where another person has fallen ill with bird flu.

China state television said Sunday the victim was a 56-year-old man whose wife died from the H7N9 virus earlier this month.

A total of 55 people have been infected in the latest outbreak of bird flu - 11 have perished.

There is concern that if the disease jumps from person to person, it could spark a pandemic.

But the World Health Organization says that hasn't happened.

(SOUNDBITE) (English) WORLD HEALTH ORGANISATION (WHO) CHINA REPRESENTATIVE MICHAEL O'LEARY SAYING:

"It's that ease of transmission that we are concerned about, and there's no evidence of that yet."

Meanwhile, a case of the virus was reported in the capital Beijing, far from the original cluster.

That has worried some residents, who still have vivid memories of a deadly outbreak of the SARS virus in 2003.

(SOUNDBITE) (Mandarin) 29-YEAR-OLD YAN NA SAYING:

"First o