TY - JOUR T1 - Co-circulation of influenza A(H1N1)pdm09 and influenza A(H3N2) viruses, World Health Organization (WHO) European Region, October 2018 to February 2019. JF - Euro Surveill Y1 - 2019 A1 - Hannah Segaloff A1 - Angeliki Melidou A1 - Adlhoch, Cornelia A1 - Dmitriy Pereyaslov A1 - Robesyn, Emmanuel A1 - Penttinen, Pasi A1 - Sonja J Olsen A1 - WHO European Region A1 - European Influenza Surveillance Network EISN KW - INFLUENZA AB -

In the World Health Organization European Region, the 2018/19 influenza season started in week 49 2018, crossing 10% virus-positivity in sentinel surveillance specimens. At week 5 2019, activity remained elevated with positivity rates at 55%. Both A(H1N1)pdm09 and A(H3N2) viruses circulated widely and detection levels in primary care and hospital settings were similar to past seasons. Hospitalisation data may suggest an increased susceptibility to A(H1N1)pdm09 virus in older age groups.

VL - 24 CP - 9 M3 - 10.2807/1560-7917.ES.2019.24.9.1900125 ER -