Letter to the editor. Spotlight on measles 2010: timely administration of the first dose of measles vaccine in the context of an ongoing measles outbreak in France.

To the editor: Parent du Châtelet et al. recently described the ongoing measles outbreak in France [1]. We would like to highlight a specific aspect of this outbreak: the significant change in the age distribution of measles cases. In fact, the proportion of cases aged under one year has increased significantly from 2008 to 2010 and this population represents to date the highest incidence rate [1]. Several factors could explain this phenomenon, leading to the question of the necessity of specific control measures in response to the increase of measles cases in the under one year-olds.