No evidence of bird flu human-to-human transmission: WHO

World Health Organization officials say there is still no evidence that the latest strain of bird flu is transmitted from human to human. Jessica Gray reports.

Three elderly Chinese patients who contracted bird flu prepare to leave Shanghai Hospital. According to state media, the man who had made full recoery with this man saying on Sunday he felt fine spirits.

The news comes as the World Health Orgnization reported 2 more deaths from the H7N9 virus which bring the death toll to 20. There're at least 102 people infected with bird flu across China. According to researchers Monday, half of the cases were found in people over the age of 60.

--At one thing we're just striking is the age distribution of confirmed cases, so many of the age H7N9 cases has been in older people around half of the confirmed H7N9 cases be in people above of the age is 60 years.

Experts also believe there could be as many as 120 unidentified mild H7N9 infections in the country's mainland. However, the WHO has not found any evidence the virus has spreaded human to human as of yet.