Officials said on Sunday that it is unclear how the victims were infected, as the Chinese Center for Disease Control and Prevention confirmed a day earlier that all the three were taken ill recently by the H7N9 strain.
The two men, aged 27 and 87, were infected by the H7N9 virus in February and died some weeks later.
Meanwhile, China’s National Health and Family Planning Commission said that the third person, a 35-year-old woman, fell ill on March 5 in the province of Anhui, located near to Shanghai.
“There was no sign that any of the three, who were infected over the past two months, had contracted the disease from each other, and no sign of infection in the 88 people who had closest contact with them,” said the medical agency.
The World Health Organization regional spokesman Timothy O’Leary has said they are “closely monitoring the situation” in China.
“There is apparently no evidence of human-to-human transmission, and transmission of the virus appears to be inefficient, therefore the risk to public health would appear to be low,” said O’Leary.
Given that the H7N9 strain is considered not easily contracted by humans, there is no vaccine against the virus. The majority of humans, who have died from the bird flu, were infected by another type of the disease, namely the H5N1 strain.
Since 2003, the H5N1 strain has caused more than 360 confirmed human deaths and tens of millions of birds have died from the virus.
CAH/HJL
Source Article from http://www.presstv.ir/detail/2013/04/01/296017/rare-bird-flu-strain-kills-two-in-china/
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