The weekly retrospective gives a summary of trends in acute respiratory infections, including COVID-19 and influenza (influenza virus) and respiratory syncytial virus (RSV).
Trends of the week:
COVID-19: increase in the number of cases of COVID-19.
Respiratory syncytial virus (RSV): slight increase in the number of RSV cases.
Influenza: slight increase in the number of influenza cases.
COVID-19/SARS-CoV-2
From 27 November to 3 December 2023 (week 48), the number of people testing positive for SARS-CoV-2 increased to 460 cases, compared to 319 cases the previous week (+44%).
The positivity rate rose to 26% compared with 22% the previous week. The viral concentration detected in wastewater is increasing[1].
The latest sequencing data available show a preponderance of the EG.5.1 variant (31%) and the proportion of the BA.2.86 variant has increased to 6%. [2]
Influenza
For the week of 27 November to 3 December 2023 (week 48), the number of influenza cases reported by laboratories increased to 49 cases compared to 41 cases in the previous week, an increase of 19% compared to the previous week.
This data largely overlaps with LNS sentinel surveillance, which indicates increased circulation of rhinoviruses, RSV and SARS-CoV-2 in particular, but little circulation of influenza viruses [2].
Respiratory syncytial virus (RSV)
For the week of 27 November to 3 December 2023 (week 48), the number of respiratory syncytial virus (RSV)-positive individuals detected by the laboratories rose to 116 cases, compared with 100 the previous week, presenting an increase of 16%.
Communiqué par le ministère de la Santé et de la Sécurité sociale