# Multicenter Serologic Investigation of Influenza D Virus in Cats and Dogs, Europe, 2015–2024 **Authors:** Claudia Maria Trombetta, Aurora Fiori, Alessandro Falsini, Francesco Pellegrini, Sophie Le Poder, Amit Eichenbaum, Venetia Cardona, Justine Oliva, Gilles Meyer, Nataliia Muzyka, Denys Muzyka, Emanuele Montomoli, Barbara di Martino, Mariette F. Ducatez, Gianvito Lanave, Vito Martella, Michele Camero PMC · DOI: 10.3201/eid3202.251164 · Emerging Infectious Diseases · 2026-02-01 ## TL;DR This study investigated the presence of influenza D virus in cats and dogs across Europe from 2015 to 2024, finding only a small percentage of positive cases in Ukraine. ## Contribution The study reports the first evidence of IDV seroprevalence in cats and dogs in Ukraine. ## Key findings - No IDV positivity was found in cats and dogs in France and Italy. - In Ukraine, 2.46% of dogs and 0.85% of cats tested IDV-positive in 2024. ## Abstract We conducted a multicenter study in Europe (France, Italy, and Ukraine) to assess the seroprevalence of influenza D virus (IDV) in domestic cats and dogs. Serum samples from France (2015–2018) and Italy (2023–2024) showed no IDV positivity. In Ukraine, 2.46% of dogs and 0.85% of cats tested IDV-positive in 2024. ## Full-text entities - **Diseases:** infection (MESH:D007239), influenza virus infections (MESH:D007251) - **Species:** Canis lupus familiaris (dog, subspecies) [taxon 9615], Felis catus (cat, species) [taxon 9685], Homo sapiens (human, species) [taxon 9606], Influenza D virus (no rank) [taxon 1511084], Influenza A virus (no rank) [taxon 11320], Sus scrofa (pig, species) [taxon 9823], Influenza C virus (no rank) [taxon 11552], Bos taurus (bovine, species) [taxon 9913] ## Full text _Full body text omitted from this summary view._ Fetch the complete paper as Markdown: https://tomesphere.com/paper/PMC12928237/full.md ## References 6 references — full list in the complete paper: https://tomesphere.com/paper/PMC12928237/full.md --- Source: https://tomesphere.com/paper/PMC12928237