H1N1 virus mutation occurs sporadically isolated
Posted on January 7, 2010
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This virus variant found so far is a distributed, isolated from cases there is no correlation between the virus does not appear continuous spread of the virus virulence and pathogenicity is not increased.
Shuyue Long pointed out that the virus is still on the neuraminidase inhibitors and other antiviral drugs sensitive. Antigen studies have shown that the antigenicity of a stream with the currently used vaccine strains in line. Thus, a flow of the vaccine are still valid.
Shu Yuelong that is an inevitable influenza virus mutates, which is determined by characteristics of influenza virus itself. According to the information, in the past few months, more than 10 countries and regions have isolated a similar virus. Mainland of China and Hong Kong have also monitored to the same variation of the virus.
Shuyue Long said that the Mainland of China published by the WHO found in three cases of variant viruses, not entirely accurate. Zhejiang Medical University and Zhejiang CDC released the virus from the same patients, in September of a severe case has now been discharged from hospital. In addition, this variation the virus can be a light case of hospitalization or death cases were isolated cases, and are distributed isolated cases, there is no correlation between them. In general, the influenza virus mutates frequently occurs, and only may lead to its pathogenicity, transmission power, antigenic variation, as well as resistance to change will only result in the public health impact.
WHO China Chen Weiyun press officer, said today that influenza (including a stream) virus changes are common, especially when the virus from person to person spread among a large number of hours.
According to available information, WHO considers that, antivirals (Tamiflu and Relenza) and Influenza A H1N1 influenza vaccine is still in the variation to be effective.
WHO warned all countries want to maintain a high degree of Influenza A H1N1 influenza virus, surveillance, detection and reporting, such as severe or dramatic increase in the number of deaths, changes in the way transmission of the virus, as well as the emergence of drug-resistant cases of non-normal happening.
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