A Study to Determine the Epidemiology and Evaluate the Burden of Disease in Respiratory Syncytial Virus/Human Metapneumovirus and Influenza A Infected Hospitalized Participants (Adults and Children)

A Retrospective Non-Interventional Study to Determine the Epidemiology and Evaluate the Burden of Disease in Respiratory Syncytial Virus/Human Metapneumovirus and Influenza A Infected Hospitalized Patients (Adults and Children) at Selected European Sites

The purpose of this study is to describe the clinical and economic burden in adults and infants/children less than or equal to 5 years of age by type of respiratory pathogen (respiratory syncytial virus [RSV], influenza A, and human metapneumovirus [hMPV] in adults; RSV and hMPV in infants/children) based on medical resource utilization; rate and type of complications during and after hospitalization; mortality; rate and reasons of re-hospitalization related to index hospitalization; post-discharge care information and International Classification of Diseases 9th/10th revision (ICD-9/10)/Diagnostic-related Group (DRG) codes used (distribution).

Inclusion Criteria:

• Adult greater than or equal to (>=) 18 years of age or infant/child less than or equal to (=<) 5 years of age
• Participants hospitalized must have documentation of a confirmed diagnosis by PCR during the prespecified recent past season(s): RSV, influenza A, or hMPV infection in adults RSV or hMPV in infants/children (The first hospitalization in the season of data collection with confirmed diagnosis by PCR is considered the index hospitalization)
• Participants may include those hospitalized in the season of data collection with or without symptoms of a respiratory viral infection (including those of nosocomial origin), and/or to treat complications of viral infections, including patients admitted to the intensive care unit (ICU)
• Hospitalized greater than (>) 24 hours