Key points

• In mainland France

  • A marked increase in incidence (+54%), greater than the increase in the number of people tested

  • Increase in incidence across all age groups, particularly among those aged 20–30

  • Increase in the number of new hospitalizations for COVID-19, but stable use of emergency care

  • 19 departments with an incidence rate > 10 per 100,000 inhabitants in Week 30− Mayenne: 143 per 100,000 inhabitants, high vulnerability level (increasing incidence, very high testing activity, stable positivity rate, 2 clusters with community transmission)− 17 other departments with incidence rates between 10 and 20 per 100,000 inhabitants, and Val d’Oise: 20.5 per 100,000 inhabitants

  • 7 departments at moderate risk and 3 departments at high risk

  • Increase in the number of new clusters since early July

• In French Guiana and Mayotte: continued high levels of viral circulation

• Decrease in the consistent adoption of preventive measures (maintaining a distance of at least 1 m, greeting without shaking hands, avoiding hugs), but more consistent mask-wearing in public