Risks of an adverse event following influenza vaccination are far less common than complications related to influenza itself, and the adverse events are generally localised and mild.
Arenaviruses are a type of small virus commonly found in rodents. When a person becomes infected with an arenavirus, symptoms usually begin within 10 days.
The Global Influenza Surveillance and Response System (GISRS), led by WHO, is used for the international virological and epidemiological surveillance of human influenza.
Seasonal influenza is a vaccine-preventable disease and annual influenza vaccination is the most effective way to prevent influenza. ECDC continues to emphasise that all Europeans who are recommended to have the influenza vaccine should get vaccinated.
The clinical surveillance of influenza in the European Influenza Surveillance Network (EISN) is generally based on reports made by sentinel general practitioners. Some of the sentinel surveillance systems also include paediatricians and physicians with other specialisations. The physicians usually represent 1-5% of physicians working in the country or region.
There are general objectives for integrated surveillance of respiratory viruses in the European Union. These objectives apply to surveillance of influenza, COVID-19, and other respiratory virus infections.