Primary care data
Syndromic surveillance data
All countries reported activity of respiratory infections below threshold levels, where thresholds existed, based on syndromic surveillance data for influenza-like illness (ILI) and/or acute respiratory infection (ARI).
For week 25/2019, of 21 Member States and areas reporting on intensity, all reported baseline or low intensity. Of 22 Member States and areas reporting on geographic spread, 18 reported no activity, 3 reported sporadic (Greece, Sweden and the United Kingdom (Wales and Scotland)), and one reported regional spread (Norway).
Viruses detected in sentinel-source specimens (ILI and ARI)
For week 25/2019, there were no specimens reported from sentinel sources.
For weeks 21-25/2019, 5 of 321 (1.6%) sentinel specimens tested positive for an influenza virus; 3 were influenza type A and 2 were influenza B (Table). The 2 influenza A viruses subtyped were A(H3N2).
Details of the distribution of viruses detected in non-sentinel-source specimens can be found in the Virus characteristics section.