Hong Kong authorities said they plan to slay 15 thousand hens to avert an infection outbreak. A blood test for this virus in several birds from poultry supply made from neighbouring province Guangdong was positive, the South China Morning Post newspaper reported on Wednesday.

HONG KONG, December 31. /TASS/. Avian flu virus is spreading in several Asian countries. The first person in China was diagnosed with H7N9 strain in March 2013. From the beginning of the year more than 120 got infected with avian flu in China and 39 of them died of it. Now four avian flu cases were reported in China’s mainland.

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First human H7N9 infection case since the start of this winter was reported in the Chinese Special Administrative Region several days ago. A 68-year-old woman got infected. She visited a neighbouring city of Shenzhen in southern China’s Guangdong Province not long before that. She is still estimated to be in severe condition.

A new avian flu break was reported in Japan, as this epizootic infectious disease was observed in the south of the country in Yamaguchi Prefecture.

A virus outbreak was exposed at a farm in the city of Nagato, where 20 hens died of avian flu on Monday. A 3-kilometer quarantine zone was created around a poultry farm with a ban imposed on its produce delivery.

As many as 42 thousand hens were also slaughtered in another southern prefecture Miyazaki.

This year three avian flu breaks have occurred in Japan that made poultry farmers kill around 150 thousand hens.

There is yet no proof that this disease strain is transmitted from human to human.