The Global Influenza Hospital Surveillance Network (GIHSN) is a platform able to generate strong epidemiological and medical evidence on influenza severity and to support vaccine strain selection through timely sharing of clinical and laboratory data. GIHSN can inform policy decisions and national health authorities and serve as a network for improved influenza related capacity building and response.
Data is collected during each flu season with on-line questionnaire on the GIHSN platform and can be visualized in the analysis modules.
The GIHSN network includes currently 23 sites worldwide:
China - Shangai
China - Wuhan
France - Lyon
France - PARIS
Russian Federation - Moscow
Russian Federation - Saint Petersburg
Spain - Valencia
The sites are not-for-profit institutions coordinating local hospitals networks. In May each year there is a call for proposal for the upcoming flu season. A selection of sites is done by the Executive Committee of the Foundation for Influenza Epidemiology based on the quality of the proposal and the capacities of the site.
The data visualized on the platform is collected by the sites (see list here above) through on-line questionnaires that are established by the Scientific Committee of the network. The variables collected might differ slightly between seasons.
Variables currently collected by the GIHSN sites:
Patients 5 years of age and more:
Does the patient comply with any of the admissiondiagnosis listed in Annex 1?
Admission diagnosis (letter / code.subcode
Date of admission
What is the hospital ID?
Patient study identification number
Age in years
Have you had one of these symptoms in the last 7days prior to admission? Fever
Have you had one of these symptoms in the last 7days prior to admission? Malaise
Have you had one of these symptoms in the last 7days prior to admission? Headache
Have you had one of these symptoms in the last 7days prior to admission? Myalgia
Have you had one of these symptoms in the last 7days prior to admission? Cough
Have you had one of these symptoms in the last 7days prior to admission? Sore throat
Have you had one of these symptoms in the last 7days prior to admission? Shortness of breath
Have you had one of these symptoms in the last 7days prior to admission? Nasal congestion
Does the patient comply with the GIHSN ILI casedefinition and the 7 days criteria?
Date of swabbing
Does the patient have a positive result? If yes, which ones corresponding to the positive virus (es)
B / Yamagata
B / Victoria
Influenza A no lineage
Influenza B no lineage
Did you test for other respiratory viruses?
Have you detected a co-infection?
Number of weeks
Does the patient have any chronic conditions?
Chronicobstructive pulmonary disease
Immunodeficiency (except HIV) / Organ transplant
Rheumatologic disease / Autoimmune disease
Neurologicalor neuromuscular disease
Cirrhosis / Liver disease
Prescriptions of antiviral for the current episode?
Prescription of antibiotics preceding this admission?
What is the baseline frailty score of the patient?
Influenza vaccination for the current season
Vaccinated more than 14 days before onset of the ILI symptoms
Influenza vaccination in the preceding season?
Confusion / lethargy at admission
Blood pressure (systolic / diastolic)
Respiratory rate at admission (breaths per minute)
Supplemental oxygen without mechanical ventilation
Death while hospitalized
Discharge / death date
Discharge to another hospital
Main diagnose at discharge / death (letter / code.subcode)
Secondary 1 diagnose at discharge / death (letter / code.subcode)
Secondary 2 diagnose at discharge / death (letter / code.subcode)
What is the frailty score of the patient at discharge?
Did you submit the sample to GISAID EpiFlu ™ database?
GISAID Accession Number