Carried out this afternoon by the Ministry of Health and AQSIQ jointly held H1N1 Type A influenza prevention and control News conference, the Ministry of Health Deputy Director of the Office of Health Emergency, said Liang years found that there is no obvious pathogenic mutation.

It is reported that China has 729 cases of confirmed cases of a stream, report number of cases is increasing. Leung pointed out that China's epidemic years of the four characteristics:

First was a rapid increase in the trend of cases. Since the first case report to the first 100 cases at intervals of 30 days, the first 100 cases to 300 cases between the first nine days, the first 300 cases to 500 cases of the first four days interval, the first 500 cases to 700 cases of the first four days interval.

Second, cases are still mainly imported. As of June 28, enter STD cases the total number of confirmed cases accounted for 72.4%. Cases imported from the United States, Canada and Australia accounted for 90%. Case Report focused on the provinces and cities in aviation, land crossings, or more frequent exchanges with the outside world, tourism, resource-rich provinces.

Third, cases of young adults (under 30 years of age accounted for more than 70%), all clinical symptoms are lighter to fever and upper respiratory symptoms, no cases of severe or death.

fourth is found there is no obvious pathogenic mutation. As of June 25, China has isolated the virus 85, are separated from the virus with the United States a high degree of homology, found that there is no obvious pathogenic mutation, neuraminidase inhibitors on drug-sensitive.