Key Points

• In 2022, 74 cases of Legionnaires’ disease among residents of Normandy were reported.

• The regional incidence was on the rise and was the highest in Normandy in the past ten years. However, it remained among the lowest in mainland France.

• The characteristics of the cases were identical to those observed at the national level and in previous years.

• The proportion of cases in which a Legionella strain was isolated from patients remained stable compared to 2021.

• The distribution of reported types of risk exposures was similar to previous years.