A subset of countries and areas monitor severe disease related to influenza virus infection by surveillance of
1) hospitalized laboratory-confirmed influenza cases in ICUs or other wards, or
2) severe acute respiratory infection (SARI; countries mostly located in the eastern part of the Region).
- For week 47/2020, specimens from 112 SARI cases were tested for influenza viruses. All were negative.
- For the season to date, 10 countries and areas have reported 5 290 SARI cases and 742 were tested for influenza viruses. All were negative.