Experts from the Ministry of agriculture say the virus can infect people in many ways

Introduction: Xinhuanet, Beijing, Nov 30 (Xinhua) - on the afternoon of Nov 30, Li Jinxiang, deputy director of the Veterinary Bureau of the Ministry of agriculture, visited the Chinese government online to talk about the prevention and control of avian influenza and conduct online exchanges with netizens on issues of public interest He said that in the effective prevention and control of human spread of avian influenza, the Ministry of agriculture mainly took six measures Does the virus mutate? Li Jinxiang said that it is certain that the avian influenza virus will mutate, but in which direction it will change, in the direction of increasing virus capacity, or in the direction of weakening When it comes to the impact on people, current research shows that the virus can infect people directly from birds, as was the case in Spain in 1918 The influenza in 1952 and 1968 was caused by the gene exchange between avian influenza virus and human influenza virus Scientists found that PA, PB1 and Pb2, three aggregation genes of the virus, play an important role In 1967 and 1968, PB1 and hemagglutinin genes appeared together in the process of virus recombination Among the "Spanish influenza" viruses, 4 amino acids of PA, 1 amino acid of PB1 and 5 amino acids of Pb2 are not found in other avian influenza viruses At present, foreign studies have found that in some samples of H5N1 avian influenza virus in Southeast Asia, there is a PB2 amino acid consistent with the "Spanish influenza" virus, which indicates that H5N1 is gradually adapting to human beings, but there are still some key variations of the virus to obtain the ability of interpersonal transmission If the PA, PB1 and Pb2 genes of H5N1 virus are similar to those of human influenza virus, it may be a "dangerous signal" In vaccine development, China is indeed at the leading level in the analysis of avian influenza virus, and China's avian influenza reference laboratory is at a considerable level in the world But we are in the leading position in vaccine development There are several vaccines, such as H5N1 gene recombinant engineering vaccine, Newcastle disease vector avian influenza vaccine and fowlpox vector avian influenza vaccine, which are at the leading level in the world, especially H5N1 gene recombinant vaccine, which has very good effect in Southeast Asian countries This vaccine is provided by China We need to take comprehensive measures First, we need to strengthen immunization In addition to the chicken farms that have special requirements for us abroad, such as those we export to Japan and South Korea, they don't let us vaccinate These chicken farms can avoid the occurrence and rare occurrence of epidemic diseases from design and management, establish strict management system, establish a series of systems such as regular disinfection system, etc Fields are not immune, such as Korea and Japan But others still need immunity, which is the most important prevention and control measure Next, we need to carry out epidemic monitoring In addition, the daily supervision is very important Is there any protective measures for wild birds in the chicken farm to reduce the contact with wild birds and avoid the infection of wild birds and migratory birds with poison in the chicken farm In addition, is it necessary to establish a strict angle system for harmless treatment of feces Therefore, the prevention and control of avian influenza should be a comprehensive prevention and control measures The emergency plan has made clear the responsibilities of all departments and the roles they should play, said Li Jinxiang Starting the plan is a resource that can integrate the society from a favorable perspective Because the government at any level is composed of many departments, such as the human epidemic The health department is the competent department, but neither the prevention and control of human epidemic nor the prevention and control of animal epidemic can be undertaken by any department We should integrate social forces, increase the prevention and control efforts, and control the epidemic as soon as possible After the outbreak of the epidemic, each department needs to have a plan In the process of dealing with the epidemic, the plan makes clear the responsibilities and functions that each department should bear You will notice that in case of a major epidemic, different levels of governments will launch different levels of emergency plans according to the size of the epidemic, mainly integrating social forces to deal with the epidemic Taking the treatment of an epidemic situation of avian influenza as an example, in the process of disposal, the veterinary department shall, according to the provisions of the plan, delimit the epidemic point and epidemic area, and block the epidemic area The task of blocking is to jointly implement the blocking of the epidemic area by the public security, industry and commerce, veterinary and other departments according to the provisions of the plan When the epidemic situation is relatively large, for example, Liaoning black mountain is killing the epidemic area, and there are 3500 armed police in black mountain to carry out the task of killing and harmless treatment In addition, it also involves the supervision of the market, the transportation, and the responsibilities of the transportation department, the public security department and the industry and Commerce Department Therefore, the handling of an epidemic should be a comprehensive, comprehensive form of implementation by all departments According to Li Jinxiang, the virus of avian influenza can infect people in many ways It is very important to do a good job in personal hygiene and publicity of prevention and control of avian influenza infection For example, avian influenza can cause direct infection through direct contact and consumption of sick and dead birds Second, inhale the droplets containing high concentration of avian influenza virus through the respiratory tract, such as in the epidemic area of avian influenza, in the chicken farm, or a tiny feather, feces, etc through the respiratory tract Third, through contact with the pollutants that have been contaminated by the avian influenza virus, such as chicken coops and chicken houses that have been contaminated by the virus Fourth, water may be polluted by contact with polluted water sources, such as the feces left by migratory birds when they stay by the lake Fifth, some poisonous migratory birds, wild birds and ornamental birds, such as some people feeding pigeons and wild birds to the lake, are very dangerous to be in close contact with pigeons and wild birds According to the characteristics of this year's epidemic, the Ministry of agriculture has taken six prevention and control measures, Li Jinxiang said According to the characteristics of this year's avian influenza epidemic, the Ministry of agriculture will take six prevention and control measures next The first is to earnestly implement the regulations on emergency response to major animal epidemics, further implement the prevention and control responsibilities, and strengthen the joint prevention and control mechanism; the second is to strictly implement the epidemic reporting system and strengthen the epidemic monitoring; the third is to firmly control and put out new epidemics in accordance with the principle of "early, fast and strict"; the fourth is to continue to increase the immunization work; the fifth is to earnestly implement the regulations of the State Council In order to promote the reform of veterinary management system, we need to speed up the reform; sixth, we need to implement nine supporting policies and measures issued by the state.