Severity

A subset of Member States monitor severe disease related to influenza virus infection by surveillance of 1) hospitalized laboratory-confirmed influenza cases in intensive care units (ICUs) (n=12 Member States), or other wards (n=8 Member States), or 2) severe acute respiratory infections (SARI; n=16 Member States).

1.1) Hospitalized laboratory-confirmed influenza cases – ICUs

Numbers of reported hospitalized laboratory-confirmed influenza cases in ICUs remained low during weeks 21–35/2018, with only the Czech Republic, Spain and Sweden each reporting one case.

1.2) Hospitalized laboratory-confirmed influenza cases – other wards

Numbers of reported hospitalized laboratory-confirmed influenza cases in other wards also remained low during weeks 21–35/2018, with only the Czech Republic (n=2) and Spain (n=3) reporting cases.

2. SARI surveillance

For weeks 31–35/2018, 1 139 SARI cases were reported. Of 101 specimens tested, none were positive for influenza viruses.

For week 35/2018, the EuroMOMO project received data from 23 EU/EEA Member States or regions that were included in pooled analyses. Overall, the pooled estimates of all-cause mortality showed expected mortality levels for the participating countries.