2023年12月2日至2024年3月15日，26個(gè)歐洲國家報(bào)告了高致病性禽流感（HPAI）疫情的暴發(fā)。自上次報(bào)告以來，截至2024年3月12日，柬埔寨報(bào)告了5例甲型H5N1病毒感染的人類病例，中國報(bào)告了2例甲型H5N6和4例甲型H9N2病毒感染的人類病例、還有1例同時(shí)感染甲型H3N2病毒和甲型H10N5病毒。在歐盟/歐洲經(jīng)濟(jì)區(qū)，一般人群的感染風(fēng)險(xiǎn)被評估為低，職業(yè)暴露人群的感染風(fēng)險(xiǎn)為低至中度。部分原文報(bào)道如下：

 

　　Between 2 December 2023 and 15 March 2024, highly pathogenic avian influenza (HPAI) A(H5) outbreaks were reported in domestic (227) and wild (414) birds across 26 countries in Europe. Compared to previous years, although still widespread, the overall number of HPAI virus detections in birds was significantly lower, among other reasons, possibly due to some level of flock immunity in previously affected wild bird species, resulting in reduced contamination of the environment, and a different composition of circulating A(H5N1) genotypes. Most HPAI outbreaks reported in poultry were primary outbreaks following the introduction of the virus by wild birds. Outside Europe, the majority of outbreaks in poultry were still clustered in North America, while the spread of A(H5) to more naïve wild bird populations on mainland Antarctica is of particular concern. For mammals, A(H5N5) was reported for the first time in Europe, while goat kids in the United States of America represented the first natural A(H5N1) infection in ruminants. Since the last report and as of 12 March 2024, five human avian influenza A(H5N1) infections, including one death, three of which were clade 2.3.2.1c viruses, have been reported by Cambodia. China has reported two human infections, including one fatal case, with avian influenza A(H5N6), four human infections with avian influenza A(H9N2) and one fatal case with co-infection of seasonal influenza A(H3N2) and avian influenza A(H10N5). The latter case was the first documented human infection with avian influenza A(H10N5). Human infections with avian influenza remain rare and no sustained human-to-human infection has been observed. The risk of infection with currently circulating avian H5 influenza viruses of clade 2.3.4.4b in Europe remains low for the general population in the EU/EEA. The risk of infection remains low to moderate for those occupationally or otherwise exposed to infected animals.

 

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