WHO (World Health Organization), on its website, said that its analyses
of the genes of influenza A H7 viruses have shown signs of adaptation to
grow in mammalian species.
The monitoring plan is trying to find evidence of adaptation, if any,
said Sun Quanhui, a science adviser at the World Society for the
Protection of Animals.
"By expanding the exclusion range of virus infection, the authorities
will provide more scientific evidence that will help control and prevent
human infection of H7N9," said Mr Sun.
According to Yao Jiezhang, a veterinarian and spokesman for the Beijing
Bureau of Agriculture's animal husbandry and veterinary station, if
pigs were found carrying the virus, people are likely to get infected
According to the monitoring plan, the animal disease control and
prevention center of the Agriculture Ministry will take samples
nationwide from live bird markets, slaughterhouses, poultry farms and
wild bird habitats, and test them for viruses.