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  


For week 41/2021, two laboratory-confirmed influenza cases were reported from ICUs in the United Kingdom (England), both were influenza virus type A, one subtyped as A(H1)pdm09.


1.2) Hospitalized laboratory-confirmed influenza cases – other wards


For week 40/2021, no laboratory-confirmed influenza case from other wards was reported.


Hospital unit