sharon sanders
Editor-in-Chief & President
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Prevention and control of vaccines helps China's poultry industry survive bird flu[/FONT][/FONT][/FONT][/FONT]
source: zhttp://www.rmzxb.com.cn/c/2023-08-28/3400028.shtml
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]August 28, 2023 14:38 | Author: Zhang Yong | [/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Since October 2020, the global poultry industry has been experiencing the worst outbreak of bird flu ever recorded.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Recently, at the 20th Academic Symposium of the Poultry Disease Branch of the Chinese Animal Husbandry and Veterinary Medicine Association and hosted by Yangzhou University and China Agricultural University According to the data given by Jiang Wenming, head of the Laboratory Avian Influenza Research Platform, the third wave of epidemics starting in 2020 is the most serious in terms of the number of outbreaks and the number of poultry culled. The impact is also significant.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]As the country with the largest number of laying hens, the largest consumption of eggs, and the largest number of broiler chickens in the world, China's poultry industry has remained stable during this round of epidemic. There have been no large-scale infection and culling of poultry, and no poultry production With great ups and downs, in the context of frequent bird flu around the world, it has walked out of its own unique pace.[/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]It is the mission and responsibility of my country's poultry producers to ensure that a small egg reaches consumers safely, without shortage and continuous supply.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]"Our country used to have a rationed supply of poultry eggs, and eating poultry meat was a luxury only during festivals. Today, my country's production of poultry eggs and poultry meat ranks among the top in the world. In just a few decades, the development of the poultry industry is so Every poultry disease worker has contributed a lot." At the symposium of the Poultry Disease Branch of the Chinese Association of Animal Husbandry and Veterinary Medicine, Yu Kangzhen, Counselor of the State Council and former Vice Minister of the Ministry of Agriculture and Rural Affairs, said.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]According to Jiang Wenming, the current third wave of bird flu outbreaks began in 2020. Outbreaks have occurred in more than 70 countries and regions, and more than 171 million poultry have been culled. [/FONT][FONT=微软雅黑]At present, H5N1 is the most important subtype, accounting for 97.3%, and it is difficult to protect. More than 50% of the epidemics are caused by wild birds. [/FONT][FONT=微软雅黑]Jiang Wenming's report shows that in recent years, major domestic diseases such as H5 and H7 have been relatively stable compared with the world. In the third wave of epidemics, wild birds are the main hosts involved in my country's epidemics.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Since the outbreak of bird flu in October 2020, a small egg has made consumers realize its value. [/FONT][FONT=微软雅黑]"'Egg shortage' was once a big issue in Japan and Taiwan, and the price of eggs in the United States has tripled. In contrast, the bird flu epidemic in my country is very stable. We should be proud of this." Yu Kangzhen explain.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]In the past year, both poultry eggs and poultry meat, my country's output has achieved growth, of which poultry eggs increased by 1.4% to 34.56 million tons, and poultry meat increased by 2.6% to 24.43 million tons. [/FONT][FONT=微软雅黑]In 2022, 16.14 billion poultry will be slaughtered nationwide, an increase of 400 million or 2.5% over the previous year. [/FONT][FONT=微软雅黑]In the context of avian flu still raging around the world, laying hen stocks in Europe, the United States, Japan and other countries have been greatly reduced, and egg production has generally decreased, this achievement is commendable.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]For domestic consumers, in the context of global bird flu, the price of eggs in my country is not static. [/FONT][FONT=微软雅黑]According to data from the Ministry of Agriculture and Rural Affairs, the average annual price of eggs in bazaars in major production areas will be 10.75 yuan per kilogram in 2022, a year-on-year increase of 12.4%, and an increase of 18.2% from the average value of the past five years. [/FONT][FONT=微软雅黑]Although there has been an increase, the reason for the rise in egg prices in my country is not bird flu, but due to the impact of rising corn and soybean meal prices, feed costs have risen to historical highs, forming a strong bottom support for egg prices.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Since this year, the retail price of eggs in my country has been stable at around 11 yuan per kilogram. [/FONT][FONT=微软雅黑]According to data from the National Development and Reform Commission, the retail price of eggs has gradually dropped since it exceeded 13 yuan per kilogram in November last year. [/FONT][FONT=微软雅黑]Since January this year, it has fallen back below 13 yuan, down to 12.45 yuan. [/FONT][FONT=微软雅黑]In July this year, it fell below 11 yuan, which was 10.88 yuan per kilogram.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Generally speaking, compared with consumers in the United States and Japan, my country's egg supply has remained stable. It has neither experienced a huge fluctuation of 32% and then plummeted by 80% like the US egg price, nor has the Japanese egg price risen by 30%. %, reaching a high price of 32 yuan per kilogram, and there is no shortage of supply and "egg shortage".[/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Different from the avian influenza prevention and control strategy of "physical isolation + culling" commonly used in European and American countries, in the face of highly pathogenic avian influenza, my country conducts H5 subtype and/or H7 subtype high pathogenicity on all artificially raised poultry across the country. It is required that the immune density of livestock and poultry should be 100%, and the qualified rate of immune antibodies should be kept above 70% all the year round. [/FONT][FONT=微软雅黑]Of course, non-edible poultry and poultry for export are excluded.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]"Our country uses a strategy of combining vaccine immunization and culling to prevent and control. This is the crystallization of experience and lessons learned in the past 20 years. It can be well summarized and is conducive to the prevention and control of poultry diseases in my country in the future." Yu Kangzhen said that my country's current round of bird flu Behind the stable epidemic situation is the result of the use of bird flu vaccine and the implementation of comprehensive prevention and control measures.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Vaccine immunization is the most important means of disease prevention and control, but influenza virus is very easy to mutate, and mutations in the gene of avian influenza virus can cause antigenic changes, and may lead to a decline in the protective effect of the original vaccine. [/FONT][FONT=微软雅黑]For this reason, the bird flu vaccine strain has to be updated in time.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]From the perspective of subtype and blood type, it is mainly caused by H5N8 before the end of 2021, and it is mainly caused by H5N1 from 2021 to now. [/FONT][FONT=微软雅黑]The H5N1 subtype avian influenza virus will become the main subtype globally until the fall of 2021. [/FONT][FONT=微软雅黑]At the end of 2021, on the basis of fully evaluating the H5 subtype avian influenza virus circulating in China, the relevant departments of our country made timely adjustments to the avian influenza virus. [/FONT][FONT=微软雅黑]In January 2022, Announcement No. 513 of the Ministry of Agriculture and Rural Affairs approved the use of a new vaccine, the recombinant avian influenza virus (H5+H7) trivalent inactivated vaccine. [/FONT][FONT=微软雅黑]In this way, the antigenicity of the vaccine is more compatible with the current circulating strains, laying the foundation for resisting this round of major bird flu outbreaks.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]For a long time, my country's avian influenza vaccine has been in the process of dynamic adjustment. This is a long-term and unrelenting task. On the one hand, researchers need to maintain real-time monitoring of avian influenza viruses, and on the other hand, they must quickly develop corresponding vaccines. Vaccines and reagents, product updates and iterations should also keep pace with the times.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]"In the past three years, veterinarians engaged in poultry disease research have been very concerned about the real-time developments of avian influenza, because the epidemic is happening right before our eyes. As veterinarians, we must have a sense of urgency and crisis, but we have withstood the test. China's poultry Industry production is stable." Chen Hualan, an academician of the Chinese Academy of Sciences, said that in the face of new invasive strains, they had to update the H5 vaccine strain in time, providing a solid barrier for China to survive the global "egg shortage".[/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]When it comes to animal epidemics, my country has to face its own reality, that is, the large amount of breeding, the wide area, the relatively backward breeding methods, the increase in international trade in animals and animal products, the weak grassroots animal epidemic prevention system, and the severe and complicated situation of animal epidemic prevention. [/FONT][FONT=微软雅黑]Because of this, outbreaks of severe animal diseases such as bird flu may have devastating consequences. [/FONT][FONT=微软雅黑]For this reason, my country has long adhered to the policy of compulsory immunity against highly pathogenic avian influenza vaccines.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Chen Hualan said that by the end of 2022, my country's bird flu vaccine will reach more than 300 billion copies. At the same time, my country's bird flu vaccine is also used in many countries such as Asia and Africa. It played an important role.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]However, many countries such as Europe and the United States do not immunize poultry with bird flu vaccines, which is also an important reason that easily leads to large-scale outbreaks. [/FONT][FONT=微软雅黑]They are worried that Congress, the destination of poultry products, will impose a trade ban on the use of bird flu vaccines to produce meat and egg products, saying that they cannot determine whether they are infected with the virus or because of the vaccination, because the test results are all positive.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]For Western countries, the use of bird flu vaccines involves complex economic, political and scientific issues. [/FONT][FONT=微软雅黑]Among other things, the fear of trade bans is a huge barrier to mass vaccination of poultry. [/FONT][FONT=微软雅黑]The current strategy is still to eliminate the virus by isolating infected farms and culling infected flocks.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]However, for this round of bird flu, it may not be so easy to eliminate or eradicate it. [/FONT][FONT=微软雅黑]Because the occurrence of H5N1 in wild birds is very common now, the isolation and culling of chicken flocks to eliminate the virus may not be able to curb its spread.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Chen Hualan said that in a report in the American "Science" magazine on April 7 this year, "The United States has begun to use vaccines!" [/FONT][FONT=微软雅黑]" may be a signal. The whole article is highlighted in a red box, but the facts cited are all China's experience in bird flu prevention and control.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]In fact, as early as May last year, the European Union recognized that vaccination is meaningful and is currently testing against H5N1. [/FONT][FONT=微软雅黑]That same month, prompted by the French presidency of the EU Council, the 27 EU agriculture ministers approved a request inviting the Commission and member states to intensify efforts to develop a vaccination strategy to prevent and control highly pathogenic avian influenza. [/FONT][FONT=微软雅黑]In October of that same year, at a conference hosted by the International Union for Biological Standardization in Paris, participants also called for the "removal of unnecessary barriers" to vaccination to control highly pathogenic avian influenza.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]It is understood that at present, France, the Netherlands, Hungary, Italy and other countries have started vaccine experiments. [/FONT][FONT=微软雅黑]In May this year, at the 90th Congress of the World Organization for Animal Health held in Paris, the French Minister of Agriculture called for exploring all avenues to fight HPAI. [/FONT][FONT=微软雅黑]According to the plan, it is expected that this autumn, France will promote the use of bird flu vaccine.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]"The successful experience of China's vaccine immunization provides a model and guidance for European and American countries to use vaccines to prevent and control H5 avian influenza." Chen Hualan said that China's experience has influenced European and American countries and even the world to a certain extent. Now they have begun to shift from culling to vaccine immunization. out of transition.[/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Recently, at the 20th Academic Symposium of the Poultry Disease Branch of the Chinese Animal Husbandry and Veterinary Medicine Association and hosted by Yangzhou University and China Agricultural University According to the data given by Jiang Wenming, head of the Laboratory Avian Influenza Research Platform, the third wave of epidemics starting in 2020 is the most serious in terms of the number of outbreaks and the number of poultry culled. The impact is also significant.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]As the country with the largest number of laying hens, the largest consumption of eggs, and the largest number of broiler chickens in the world, China's poultry industry has remained stable during this round of epidemic. There have been no large-scale infection and culling of poultry, and no poultry production With great ups and downs, in the context of frequent bird flu around the world, it has walked out of its own unique pace.[/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Egg supply steady[/FONT][/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]It is the mission and responsibility of my country's poultry producers to ensure that a small egg reaches consumers safely, without shortage and continuous supply.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]"Our country used to have a rationed supply of poultry eggs, and eating poultry meat was a luxury only during festivals. Today, my country's production of poultry eggs and poultry meat ranks among the top in the world. In just a few decades, the development of the poultry industry is so Every poultry disease worker has contributed a lot." At the symposium of the Poultry Disease Branch of the Chinese Association of Animal Husbandry and Veterinary Medicine, Yu Kangzhen, Counselor of the State Council and former Vice Minister of the Ministry of Agriculture and Rural Affairs, said.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]According to Jiang Wenming, the current third wave of bird flu outbreaks began in 2020. Outbreaks have occurred in more than 70 countries and regions, and more than 171 million poultry have been culled. [/FONT][FONT=微软雅黑]At present, H5N1 is the most important subtype, accounting for 97.3%, and it is difficult to protect. More than 50% of the epidemics are caused by wild birds. [/FONT][FONT=微软雅黑]Jiang Wenming's report shows that in recent years, major domestic diseases such as H5 and H7 have been relatively stable compared with the world. In the third wave of epidemics, wild birds are the main hosts involved in my country's epidemics.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Since the outbreak of bird flu in October 2020, a small egg has made consumers realize its value. [/FONT][FONT=微软雅黑]"'Egg shortage' was once a big issue in Japan and Taiwan, and the price of eggs in the United States has tripled. In contrast, the bird flu epidemic in my country is very stable. We should be proud of this." Yu Kangzhen explain.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]In the past year, both poultry eggs and poultry meat, my country's output has achieved growth, of which poultry eggs increased by 1.4% to 34.56 million tons, and poultry meat increased by 2.6% to 24.43 million tons. [/FONT][FONT=微软雅黑]In 2022, 16.14 billion poultry will be slaughtered nationwide, an increase of 400 million or 2.5% over the previous year. [/FONT][FONT=微软雅黑]In the context of avian flu still raging around the world, laying hen stocks in Europe, the United States, Japan and other countries have been greatly reduced, and egg production has generally decreased, this achievement is commendable.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]For domestic consumers, in the context of global bird flu, the price of eggs in my country is not static. [/FONT][FONT=微软雅黑]According to data from the Ministry of Agriculture and Rural Affairs, the average annual price of eggs in bazaars in major production areas will be 10.75 yuan per kilogram in 2022, a year-on-year increase of 12.4%, and an increase of 18.2% from the average value of the past five years. [/FONT][FONT=微软雅黑]Although there has been an increase, the reason for the rise in egg prices in my country is not bird flu, but due to the impact of rising corn and soybean meal prices, feed costs have risen to historical highs, forming a strong bottom support for egg prices.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Since this year, the retail price of eggs in my country has been stable at around 11 yuan per kilogram. [/FONT][FONT=微软雅黑]According to data from the National Development and Reform Commission, the retail price of eggs has gradually dropped since it exceeded 13 yuan per kilogram in November last year. [/FONT][FONT=微软雅黑]Since January this year, it has fallen back below 13 yuan, down to 12.45 yuan. [/FONT][FONT=微软雅黑]In July this year, it fell below 11 yuan, which was 10.88 yuan per kilogram.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Generally speaking, compared with consumers in the United States and Japan, my country's egg supply has remained stable. It has neither experienced a huge fluctuation of 32% and then plummeted by 80% like the US egg price, nor has the Japanese egg price risen by 30%. %, reaching a high price of 32 yuan per kilogram, and there is no shortage of supply and "egg shortage".[/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Vaccines are essential[/FONT][/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Different from the avian influenza prevention and control strategy of "physical isolation + culling" commonly used in European and American countries, in the face of highly pathogenic avian influenza, my country conducts H5 subtype and/or H7 subtype high pathogenicity on all artificially raised poultry across the country. It is required that the immune density of livestock and poultry should be 100%, and the qualified rate of immune antibodies should be kept above 70% all the year round. [/FONT][FONT=微软雅黑]Of course, non-edible poultry and poultry for export are excluded.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]"Our country uses a strategy of combining vaccine immunization and culling to prevent and control. This is the crystallization of experience and lessons learned in the past 20 years. It can be well summarized and is conducive to the prevention and control of poultry diseases in my country in the future." Yu Kangzhen said that my country's current round of bird flu Behind the stable epidemic situation is the result of the use of bird flu vaccine and the implementation of comprehensive prevention and control measures.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Vaccine immunization is the most important means of disease prevention and control, but influenza virus is very easy to mutate, and mutations in the gene of avian influenza virus can cause antigenic changes, and may lead to a decline in the protective effect of the original vaccine. [/FONT][FONT=微软雅黑]For this reason, the bird flu vaccine strain has to be updated in time.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]From the perspective of subtype and blood type, it is mainly caused by H5N8 before the end of 2021, and it is mainly caused by H5N1 from 2021 to now. [/FONT][FONT=微软雅黑]The H5N1 subtype avian influenza virus will become the main subtype globally until the fall of 2021. [/FONT][FONT=微软雅黑]At the end of 2021, on the basis of fully evaluating the H5 subtype avian influenza virus circulating in China, the relevant departments of our country made timely adjustments to the avian influenza virus. [/FONT][FONT=微软雅黑]In January 2022, Announcement No. 513 of the Ministry of Agriculture and Rural Affairs approved the use of a new vaccine, the recombinant avian influenza virus (H5+H7) trivalent inactivated vaccine. [/FONT][FONT=微软雅黑]In this way, the antigenicity of the vaccine is more compatible with the current circulating strains, laying the foundation for resisting this round of major bird flu outbreaks.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]For a long time, my country's avian influenza vaccine has been in the process of dynamic adjustment. This is a long-term and unrelenting task. On the one hand, researchers need to maintain real-time monitoring of avian influenza viruses, and on the other hand, they must quickly develop corresponding vaccines. Vaccines and reagents, product updates and iterations should also keep pace with the times.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]"In the past three years, veterinarians engaged in poultry disease research have been very concerned about the real-time developments of avian influenza, because the epidemic is happening right before our eyes. As veterinarians, we must have a sense of urgency and crisis, but we have withstood the test. China's poultry Industry production is stable." Chen Hualan, an academician of the Chinese Academy of Sciences, said that in the face of new invasive strains, they had to update the H5 vaccine strain in time, providing a solid barrier for China to survive the global "egg shortage".[/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Prevention and control experience affects the world[/FONT][/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]When it comes to animal epidemics, my country has to face its own reality, that is, the large amount of breeding, the wide area, the relatively backward breeding methods, the increase in international trade in animals and animal products, the weak grassroots animal epidemic prevention system, and the severe and complicated situation of animal epidemic prevention. [/FONT][FONT=微软雅黑]Because of this, outbreaks of severe animal diseases such as bird flu may have devastating consequences. [/FONT][FONT=微软雅黑]For this reason, my country has long adhered to the policy of compulsory immunity against highly pathogenic avian influenza vaccines.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Chen Hualan said that by the end of 2022, my country's bird flu vaccine will reach more than 300 billion copies. At the same time, my country's bird flu vaccine is also used in many countries such as Asia and Africa. It played an important role.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]However, many countries such as Europe and the United States do not immunize poultry with bird flu vaccines, which is also an important reason that easily leads to large-scale outbreaks. [/FONT][FONT=微软雅黑]They are worried that Congress, the destination of poultry products, will impose a trade ban on the use of bird flu vaccines to produce meat and egg products, saying that they cannot determine whether they are infected with the virus or because of the vaccination, because the test results are all positive.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]For Western countries, the use of bird flu vaccines involves complex economic, political and scientific issues. [/FONT][FONT=微软雅黑]Among other things, the fear of trade bans is a huge barrier to mass vaccination of poultry. [/FONT][FONT=微软雅黑]The current strategy is still to eliminate the virus by isolating infected farms and culling infected flocks.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]However, for this round of bird flu, it may not be so easy to eliminate or eradicate it. [/FONT][FONT=微软雅黑]Because the occurrence of H5N1 in wild birds is very common now, the isolation and culling of chicken flocks to eliminate the virus may not be able to curb its spread.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]Chen Hualan said that in a report in the American "Science" magazine on April 7 this year, "The United States has begun to use vaccines!" [/FONT][FONT=微软雅黑]" may be a signal. The whole article is highlighted in a red box, but the facts cited are all China's experience in bird flu prevention and control.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]In fact, as early as May last year, the European Union recognized that vaccination is meaningful and is currently testing against H5N1. [/FONT][FONT=微软雅黑]That same month, prompted by the French presidency of the EU Council, the 27 EU agriculture ministers approved a request inviting the Commission and member states to intensify efforts to develop a vaccination strategy to prevent and control highly pathogenic avian influenza. [/FONT][FONT=微软雅黑]In October of that same year, at a conference hosted by the International Union for Biological Standardization in Paris, participants also called for the "removal of unnecessary barriers" to vaccination to control highly pathogenic avian influenza.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]It is understood that at present, France, the Netherlands, Hungary, Italy and other countries have started vaccine experiments. [/FONT][FONT=微软雅黑]In May this year, at the 90th Congress of the World Organization for Animal Health held in Paris, the French Minister of Agriculture called for exploring all avenues to fight HPAI. [/FONT][FONT=微软雅黑]According to the plan, it is expected that this autumn, France will promote the use of bird flu vaccine.[/FONT][/FONT][/FONT]
[FONT=微软雅黑][FONT=微软雅黑][FONT=微软雅黑]"The successful experience of China's vaccine immunization provides a model and guidance for European and American countries to use vaccines to prevent and control H5 avian influenza." Chen Hualan said that China's experience has influenced European and American countries and even the world to a certain extent. Now they have begun to shift from culling to vaccine immunization. out of transition.[/FONT][/FONT][/FONT][/FONT][/FONT]
source: zhttp://www.rmzxb.com.cn/c/2023-08-28/3400028.shtml