Influenza in the Netherlands

This paper reports on the occurrence of influenza and the associated burden of illness in The Netherlands. In addition, attention is paid to the effectiveness of vaccination, vaccination status and the national strategy to raise the vaccination rate among risk groups. The incidence of influenza in the community appears to be 3 to 6 times higher than the incidence observed in general practice, since most cases do not present to the general practitioner (GP). Annually, 15 000 to 30 000 hospital admissions (1 to 2 per 1000 inhabitants) and 2000 to 2200 deaths (1.3 to 1.5 per 10 000), mostly among the elderly, are related to influenza. Vaccination has been shown to prevent about 50% of the influenza cases. Between 1991 and 1994 the vaccination rate among risk groups increased from 28 to 43%. In this period, a very active campaign was mounted. Much energy is being invested in further raising the vaccination rate among risk groups, with GPs holding a key position. In addition, the Dutch Health Council advises vaccination for persons greater than or equal to 65 years of age.