Weekly review – Week 7 from 12 to 18 February 2024

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.


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]


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


[1] https://www.list.lu/en/covid-19/coronastep/

[2] https://lns.lu/publications/

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