Primary care data

Syndromic surveillance data

For week 19/2019, of the 32 Member States reporting influenza-like illness (ILI) thresholds and the 18 Member States reporting acute respiratory infection (ARI) thresholds, none reported activity above baseline levels.

Influenza activity

For week 19/2019, of 39 Member States and areas reporting on intensity, 23 reported baseline and 16 reported low intensity. Of 40 Member States and areas reporting on geographic spread, 16 reported no activity, 20 reported sporadic, 3 reported regional and 1 (Norway) reported widespread activity .

Viruses detected in sentinel-source specimens (ILI and ARI)

For week 19/2019, 8 (10%) of 79 sentinel specimens tested positive for an influenza virus; 7 were type A and 1 was type B. Of subtyped influenza A viruses, 4 were A(H3N2) and 1 was A(H1N1)pdm09. While the percentage of specimens testing positive for influenza increased this week, this is likely due to the low number of specimens tested for influenza. Very few influenza positive viruses were reported

For the season to date, almost all influenza viruses detected were type A (99%) with type B accounting for only 1% of detections. Of subtyped A viruses, 55% were A(H1N1)pdm09 and 45% were A(H3N2). Of 64 influenza type B viruses ascribed to a lineage, 81% were B/Yamagata (74% of type B viruses were reported without a lineage).

Details of the distribution of viruses detected in non-sentinel-source specimens can be found in the Virus characteristics section.