Global Influenza Surveillance and Response System (GISRS)

Global influenza virological surveillance has been conducted through WHO's Global Influenza Surveillance and Response System (GISRS) for over half a century.

Formerly known as the Global Influenza Surveillance Network (GISN), the new name came into effect following the adoption of the Pandemic Influenza Preparedness (PIP) Framework in May 2011.

• WHO GISRS monitors the evolution of influenza viruses and provides recommendations in areas including laboratory diagnostic, vaccines, antiviral susceptibility and risk assessment.
• WHO GISRS also serves as a global alert mechanism for the emergence of influenza viruses with pandemic potential.

Established in 1952, the network currently comprises six WHO Collaborating Centres, four Essential Regulatory Laboratories and 136 institutions in 106 WHO Member States, which are recognized by WHO as National Influenza Centres, in addition to ad hoc groups established to address specific emerging issues.