The European Center for Disease Control and Prevention recently released a report that the largest bird flu epidemic has occurred in Europe since records began. The relevant departments have strengthened the detection, prevention and control of the epidemic situation, with special emphasis on the need to strengthen occupational protection for staff in contact with animals. According to the report, the epidemic season of highly pathogenic avian influenza from 2021 to 2022 is the largest epidemic season observed in Europe so far. Data from the European Food Safety Agency, the European Center for Disease Control and Prevention and the European Avian Influenza Reference Laboratory showed that 2467 poultry outbreaks were found during this period, and 48 million birds were culled; 187 outbreaks were detected in captive birds and 3573 outbreaks were detected in wild birds. In terms of spatial distribution, the report pointed out that the geographical scope of the recent epidemic was "unprecedented", affecting 37 European countries from Norway's Arctic region to southern Portugal. In terms of time comparison, from June to August this year, the level of highly pathogenic avian influenza virus detected in wild birds in EU countries reached the highest level in history; From June to September this year, the number of poultry farms with outbreaks was five times higher than that of the same period last year. The analysis shows that the avian influenza virus currently circulating in Europe belongs to evolutionary branch 2.3.4.4b, and there are 7 genotypes of the virus found. In particular, the highly pathogenic avian influenza virus H5N1 has spread beyond birds, and has been detected in red foxes in Belgium and Norway and harbour porpoises in Sweden. This is the first time that H5N1 virus has been detected in harbour porpoises in Sweden. The European Center for Disease Control and Prevention also mentioned that the virus was first detected in bottlenose dolphins in the United States and American black bears in Canada. In the face of the unprecedented epidemic situation, relevant European institutions have strengthened monitoring and control measures. European Food Safety Administration senior official Saez said recently that with the beginning of autumn migration of birds, the number of wild birds overwintering in Europe has increased, and the risk of bird flu transmission may be higher than in previous years. The agency recommended rapid implementation of monitoring measures to detect traces of the virus as early as possible. The Swedish Agricultural Bureau has recently established a monitoring system in areas with increased risk of avian influenza. In case of large-scale infection, the Bureau will set up restricted areas around the affected farms. The Bureau recently warned that some areas in Sweden will face higher risks due to the migration of wild birds, usually from the beginning of November to the late spring of the next year, so we should be vigilant during this period. The Agricultural Bureau will also carry out risk assessment together with the Swedish National Veterinary Institute to determine the scope of high-risk areas, and track bird flu trends in other European countries in real time to quickly respond to new situations. According to European media reports, the Netherlands and France have begun to test relevant vaccines against the avian influenza epidemic, but there are still doubts about the effectiveness of the vaccine. According to the report of the European Center for Disease Control and Prevention, although no cases of human infection with avian influenza virus have been found in Europe in recent years, people concerned should pay attention to strengthening protection. The Center has issued new guidelines in this regard, emphasizing the importance of taking occupational safety and health measures in workplaces where contact with animals is unavoidable. These measures include proper ventilation, separation of work clothes and personal clothing, prevention of workers' living quarters from pollution, etc. This guide