Consultations for Influenza-Like Illness in Primary Care in The Netherlands: A Regression Approach

ObjectivesTo estimate the general practitioner (GP) consultation rate attributable to influenza in The Netherlands.MethodsRegression analysis was performed on weekly numbers of influenza-like illness (ILI) GP consultations and laboratory reports for virus types A B 8 other pathogens over period 2003–2014 (11 seasons; week 40–20 following year).ResultsIn an average season, 27% 11% ILI were attributed infection by B, respectively. Influenza is therefore responsible approximately 107 000 (651/100 000) each year Netherlands. rates associated with highest children under 5 years age, at 667 100 258 B. found be predominant cause ILI-related visits all age groups except 5, which respiratory syncytial (RSV) main contributor.ConclusionsThe burden terms considerable. Overall, contributor ILI. Although symptoms are most often RSV infection, majority related occur among age.