Infectious bronchitis virus (IBV) remains a major threat to poultry production worldwide, with the GI-23 lineage emerging as one of the most epidemiologically relevant variants in recent years. Although GI-23 has been reported in Brazilian commercial poultry, its occurrence and genomic characteristics in backyard poult...
Andreina de Carvalho Araujo, Lilian de Moura Oliveira, Y. Son et al.· Avian Pathology· 0 citations
Avian influenza viruses (AIVs) circulate widely among migratory birds, where frequent reassortment drives the emergence of novel genomic constellations. However, the evolutionary pathways underlying these events remain poorly understood in South America due to historically limited genomic surveillance. Here, we report...
Gustavo de Oliveira Fenner, L. M. Thomazelli, E. Dorlass et al.· Pathogens· 0 citations
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 hig...
J. de Araújo, L. Thomazelli, Thomas P. Fabrizio et al.· Emerging Infectious Diseases· 0 citations
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