The majority were individual cases, with 251 infections spread across 104 different schools and two competence centres.
Thirty one cases belonged to the so-called scenario 2, comprised of 10 primary schools and 11 secondary schools.
Eleven cases were part of scenario 3, with between three and five infections in one class. Six schools were affected in this instance.
Finally, four cases were classified in scenario 4, as part of a new infection chain at Lycée Vauban. In the week of 19-25 April, a chain of infection was detected at the same school, following a private party, affecting six students in their final year.
Read more: All senior classes at Lycée Vauban quarantined after private party
