Hospital Surveillance

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 and areas mostly located in the eastern part of the Region).

Laboratory-confirmed hospitalized cases

1.1) Hospitalized laboratory-confirmed influenza cases – ICUs 

  • There were no reports of hospitalized laboratory-confirmed influenza cases in ICUs during week 14/2021.

 

  • Since the start of the season, there have been 11 hospitalized laboratory-confirmed influenza cases in ICUs (9 from the United Kingdom (England) and 2 from Ukraine; all were infected with type A viruses and 1 from Ukraine was subtyped as A(H1)pdm09). Of two cases with known age, one was a patient in the 15-64 years age group and one was a patient in the 65 years and over age group. All cases were non-fatal.

 

1.2) Hospitalized laboratory-confirmed influenza cases – other wards

  • Ukraine reported a single other ward case of hospitalized laboratory-confirmed influenza during week 14/2021.

 

  • Since the start of the season, there have been 13 laboratory-confirmed influenza cases (all were infected with type A viruses) in wards outside ICUs reported by Ukraine: 7 viruses were subtyped as A(H1)pdm09 and 6 were A not subtyped. Four cases were in children between 0-4 years old, 7 cases were in patients aged 15-64 years and two cases were in patients in the 65 years and over age group. All cases were non-fatal.

 

Hospital unit