The weekly retrospective gives a summary of trends in acute respiratory infections, including COVID-19, influenza (influenza virus) and respiratory syncytial virus (RSV).
Trends of the week
COVID-19: Decrease in the number of cases and the positivity rate of COVID-19.
Respiratory syncytial virus (RSV): Decrease in the number of RSV cases.
Influenza: Decrease in the number of influenza cases.
COVID-19/SARS-CoV-2
From 12 to 18 February 2024 (week 7), the number of people testing positive for SARS-CoV-2 dropped to 56 cases, compared to 109 cases the previous week (-49%).
The positivity rate fell to 3.3% compared to 4.8% the previous week. The viral concentration detected in wastewater is decreasing[1].
These indicators suggest that the circulation of SARS-CoV-2 has decreased.
The latest sequencing data available show a preponderance of the JN.1 variant (86.7%) followed by the BA.2.86 variant (11.1%). [2]
Influenza
For the week of 12 to 18 February 2024 (week 7), the number of influenza cases reported by laboratories decreased to 455 cases from 861 cases in the previous week, a decrease of 47% compared to the previous week.
These data largely coincide with LNS sentinel surveillance, which indicates high circulation of the influenza virus [2].
Respiratory syncytial virus (RSV)
For the week of 12 to 18 February 2024 (week 7), the number of respiratory syncytial virus (RSV)-positive individuals reported by laboratories dropped to 9 cases, compared with 18 the previous week, presenting an decrease of 50%. The peak of the epidemic this season was reached in week 50, from 11 to 17 December 2023.
Press release by the Ministry of Health and Social Security