China bird flu: Strain spreads to Taiwan; WHO says H7N9 more lethal

Beijing, April 24: The new strain of bird flu which hit several parts of China has spread to Taiwan as it reported the first case on Wednesday, even as the WHO said the deadly H7N9 virus is far "more lethal" because of its ability to spread easily from birds to humans.

A 53-year-old man in Taiwan was confirmed to be infected with the new type of bird flu, China's state-run news agency reported.

The patient is believed to have been infected after he visited Suzhou City in China's Jiangsu Province which has reported several cases of H7N9.

China has reported 108 H7N9 cases and 22 deaths since the first infections were confirmed on 31st March. The patient said he did not have any contact with birds or eat undercooked poultry or eggs during his stay in Suzhou.

He also tested Hepatitis-B-positive and suffers from high blood pressure and his condition was stated to be serious.

China has already provided samples of the human H7N9 avian flu strain to Taiwan for joint research. Meanwhile, WHO's influenza expert Dr Keiji Fukuda, who was part of investigation team that toured affected areas in China said H7N9 is more lethal as it spread easily from birds to humans unlike H5N1, which caused over 350 deaths world wide.

"This is definitely one of the most lethal influenza viruses we have seen so far," Fukuda said. A World Health Organisation (WHO) statement said all the H7N9 infections identified so far are isolated cases and there is no evidence of any inter-human transmission.

Although several cases of family-clustered infections with H7N9 avian influenza have occurred in China, there is no definitive evidence indicating that the virus was transmitted from the same source or among different people, according to a China-WHO joint statement.

Moreover, there has been no sustained human-to-human spread monitored so far, adding that the possibility of such situation cannot be ruled out, as scientists are not sure whether the virus will develop to be inter-human communicable.

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