Key Points

• The bronchiolitis outbreak continues at high levels in mainland France as well as in Guadeloupe, French Guiana, Martinique, and Mayotte.

• A decrease in emergency room visits and hospitalizations following emergency room visits for bronchiolitis in mainland France indicates that the epidemic likely peaked in week 48.

• Indicators have decreased in most regions, stabilized in Bourgogne-Franche-Comté, Corsica, Guadeloupe, and Martinique, and continued to rise in Mayotte.

• In week 49, hospitalizations for bronchiolitis accounted for half of all hospitalizations following an emergency room visit among children under two years of age in mainland France for the sixth consecutive week.