Weekly review – Week 6 from 5 to 11 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): stabilisation of the number of RSV cases at a low level.

Influenza: Decrease in the number of influenza cases. 


From 5 to 11 February 2024 (week 6), the number of people testing positive for SARS-CoV-2 dropped to 109 cases, compared to 140 cases the previous week (-22%).

The positivity rate fell to 4.8% compared to 5.7% the previous week. The viral concentration detected in the wastewater was similar to the previous week [1].

These indicators suggest that the circulation of SARS-CoV-2 is declining.

The latest sequencing data available show a preponderance of the JN.1 variant since week 47/2023  [2]. 


For the week of 5 to 11 February 2024 (week 6), the number of influenza cases reported by laboratories decreased to 852 cases from 1.020 cases in the previous week, a decrease of 16% 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 5 to 11 February 2024 (week 6), the number of respiratory syncytial virus (RSV)-positive individuals detected by laboratories rose to 17 cases, compared with 14 cases the previous week. 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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