Bird flu human mutation ruled out
The bird flu virus that spread from a son to his father showed no signs of human mutation, a spokesman for the Ministry of Health, Mao Qun'an, said yesterday.
It showed no biological features for human-to-human transmission, he said.
Mao was commenting on an April 8 report by the British medical weekly, Lancet, that human-to-human transmission of the H5N1 virus had been discovered within one family.
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