2. Methods
2.1. Study population
This study was carried out in the GP group practice
Rhenen with eight GPs caring for about 13,500 people living
in a semiurban area in the center of The Netherlands. Its
population and vaccination status have been steady over the
years. In Rhenen, the epidemic lasted from June to December
1999, according to the MHS’s records. From the GPs’ records,
we selected all 2,326 children younger than 13 years
at the start of the outbreak, living in 1,271 families.
2. Methods2.1. Study populationThis study was carried out in the GP group practiceRhenen with eight GPs caring for about 13,500 people livingin a semiurban area in the center of The Netherlands. Itspopulation and vaccination status have been steady over theyears. In Rhenen, the epidemic lasted from June to December1999, according to the MHS’s records. From the GPs’ records,we selected all 2,326 children younger than 13 yearsat the start of the outbreak, living in 1,271 families.
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