Primary care data

Syndromic surveillance data

For week 10/2019, of the 32 Member States reporting influenza-like illness (ILI) thresholds, 15 (47%) reported ILI activity above baseline levels.

These include countries in eastern areas of the European Region (n=2; Republic of Moldova, Russian Federation), northern areas (n=3; Iceland, Latvia, Norway), southern areas (n=3; Cyprus, Greece, Montenegro) and western areas (n=7; Belgium, Czech Republic, Luxembourg, Netherlands, Portugal, Slovakia, Switzerland).

Of the 18 Member States reporting acute respiratory infection (ARI) thresholds, 2 (11%) reported ARI above baseline levels. These were countries in the east (n=1; Armenia) and west (n=1; Slovakia) areas of the European Regio.

Influenza activity

For week 10/2019, of 46 Member States and areas reporting on intensity, 1 reported high intensity (Kosovo*), 13 reported medium (northern, southern and western areas), 24 reported low intensity (across the region), and 8 reported baseline (eastern, northern, western areas).

Of 46 Member States and areas reporting on geographic spread, 20 reported widespread (in northern, southern, western areas), 13 reported regional spread (across the region), 5 reported local spread (Azerbaijan, Belarus, Russian Federation, Slovakia, Switzerland), 5 reported sporadic cases (Armenia, Hungary, Ireland, Israel, United Kingdom (Northern Ireland)), and 3 reported no activity (Bulgaria, Cyprus, Uzbekistan).

*This designation is without prejudice to positions on status, and is in line with UNSCR 1244/1999 and the ICJ Opinion on the Kosovo declaration of independence.


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

For week 10/2019, 786 (42.8%) of 1 836 sentinel specimens tested positive for an influenza virus; 774 were type A and 12 were type B. Of 425 subtyped A viruses, 44.5% were A(H1N1)pdm09 and 55.5% were A(H3N2). Of 3 type B viruses ascribed to a lineage, all were Yamagata lineage (Table).

Of 33 countries or areas across the region that each tested at least 10 sentinel specimens in week 10/2019, 22 reported a proportion of influenza virus detections above 30% (median 40.9%; range 30.3% – 73.1%).

For the season to date, almost all viruses detected were influenza type A (n=18 753, 99.1%) with type B accounting for only 0.9% of detections (n=171). Of 14 358 subtyped A viruses, 8 163 (56.9%) were A(H1N1)pdm09 and 6 195 (43.1%) were A(H3N2). Of 55 influenza type B viruses ascribed to a lineage, 85.5% were B/Yamagata (67.8% of type B viruses were reported without a lineage) (Table).

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