Imported case of avian influenza A(H9N2) virus infection in a patient with miliary tuberculosis, Italy, March 2026
On 21 March 2026, avian influenza A(H9N2) virus was confirmed in Italy in a patient with miliary tuberculosis. The patient had recently travelled to West Africa. Following the detection of an unsubtypable influenza A virus, rapid molecular confirmation and full genome sequencing were performed. Phylogenetic analysis revealed that the virus belonged to subclade G5.5 and was closely related to African strains. Epidemiological investigations identified no additional cases, suggesting there was no evidence of onward transmission at the time of reporting.
Authors
- Danilo Cereda (ORCID: https://orcid.org/0000-0001-5945-5710)
- Simona Puzelli (ORCID: https://orcid.org/0000-0003-4497-9719)
- Gabriele Del Castillo (ORCID: https://orcid.org/0000-0002-3331-2815)
- Irene Maria Sciabica
- Cristina Galli (ORCID: https://orcid.org/0000-0002-0450-4156)
- Elena Pariani (ORCID: https://orcid.org/0000-0001-5681-3455)
- Marcello Tirani (ORCID: https://orcid.org/0000-0002-7512-9162)
- Anna Teresa Palamara (ORCID: https://orcid.org/0000-0001-8330-4381)
- Luigi Vezzosi (ORCID: https://orcid.org/0000-0001-6461-2231)
- Greta Romano (ORCID: https://orcid.org/0000-0002-9076-8501)
- L Mezzadri
- Francesca Sabbatini
- Fausto Baldanti
- Paolo Bonfanti
- Paola Stefanelli
- Irene Mileto
- Cristina Paduraru
Institutions
- University of Milan (IT)
- University of Pavia (IT)
- Istituto Superiore di Sanità (IT)
- Ministero della Salute (IT)
- Directorate of Health (IS)
- Azienda Ospedaliera San Gerardo (IT)
- Agenzia Regionale Prevenzione e Ambiente della Regione Emilia-Romagna (IT)
- Fondazione Lanza (IT)
- Policlinico San Matteo Fondazione (IT)
- Istituti di Ricovero e Cura a Carattere Scientifico (IT)
- University of Milano-Bicocca (IT)
Publication Details
- Journal
- Eurosurveillance
- Published
- 2026-04-16
- DOI
- https://doi.org/10.2807/1560-7917.es.2026.31.15.2600285
- Primary Topic
- Influenza Virus Research Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00