Detection of Divergent Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b Virus, São Paulo, Brazil, 2025.

IF 7.9 2区医学 Q1 IMMUNOLOGY

Emerging Infectious Diseases Pub Date : 2026-10-01 DOI:10.3201/eid3210.260723

Jansen de Araujo, Luciano M Thomazelli, Thomas P Fabrizio, Gustavo O Fenner, Erick G Dorlass, Ana K A Eisen, Viviane F Botosso, Marcello S Nardi, Caroline C Aires, Sergio M N Teixeira, Roberta M de Azevedo, Mayra H Frediani, Tatiana Ometto, Mário G L Barboza, Edmarcia E de Souza, Carsten Wrenger, Richard J Webby, Edison L Durigon

引用次数: 0

Abstract

In 2025, we detected highly pathogenic avian influenza H5N1 virus in dead waterfowl at Ibirapuera Park, São Paulo, Brazil. Genomic characterization indicated a reassortant virus that emerged from locally circulating low pathogenicity avian influenza viruses and highly pathogenic North American lineages. Our results highlight cross-species transmission risk and underscore the need for enhanced surveillance.

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高致病性禽流感A（H5N1）分叉分支2.3.4.4b病毒的检测，巴西圣保罗，2025。

2025年，我们在巴西圣保罗的Ibirapuera公园的死水禽中发现了高致病性H5N1禽流感病毒。基因组特征表明，一种重组病毒来自当地流行的低致病性禽流感病毒和高致病性北美谱系。我们的研究结果强调了跨物种传播的风险，并强调了加强监测的必要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Emerging Infectious Diseases 医学-传染病学

CiteScore

17.30

自引率

1.70%

发文量

505

审稿时长

1 months

期刊介绍： Emerging Infectious Diseases is a monthly open access journal published by the Centers for Disease Control and Prevention. The primary goal of this peer-reviewed journal is to advance the global recognition of both new and reemerging infectious diseases, while also enhancing our understanding of the underlying factors that contribute to disease emergence, prevention, and elimination. Targeted towards professionals in the field of infectious diseases and related sciences, the journal encourages diverse contributions from experts in academic research, industry, clinical practice, public health, as well as specialists in economics, social sciences, and other relevant disciplines. By fostering a collaborative approach, Emerging Infectious Diseases aims to facilitate interdisciplinary dialogue and address the multifaceted challenges posed by infectious diseases.