Figure.

Number of school outbreaks (n = 48) and number of laboratory-confirmed COVID-19 cases (n = 216) by age and week of illness onset of the first case in the outbreak, Germany, 28 January–31 August 2020

COVID-19: coronavirus disease.

If data of illness onset were not available (n = 7), week of notification was used.

Data source: mandatory notifications of laboratory-confirmed COVID-19 infections from the German national surveillance system. Outbreaks that occurred during the observation period but reported after 31 August 2020 are not included.