Expansion of influenza A(H1N1)pdm09 NA:S247N viruses with reduced susceptibility to oseltamivir, Catalonia, Spain, and in Europe, July to October 2025. - Saubi N; Andrés C; Prats-Méndez I; González-Sánchez A; Davtyan A; Vásquez-Mercado R; Rando A; Nadal P; Esperalba J; Arnedo M; Vicente M; Balada E; et al. (Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin, 2025)