No mutation of A/H1N1 virus detected in China

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Chinese scientists say there has been no mutation of the A/H1N1 virus detected in China.

With the virus spreading in North America and Japan, its ability to mutate has become a focus of concern among epidemiologists.

In China, people found to have the virus had recently been in North America, and there've been no signs of a domestic outbreak. Experts say China's preventative measures will remain focused on closely monitoring individual cases and the people who have had close contact with them.