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).

 

 

Severe acute respiratory infection (SARI)-based hospital surveillance

Please refer to the respective figures for more information for this week.