Respiratory Infections: December 22-28, 2025 Retrospective
Luxembourg Respiratory Infection Update: Week 52, 2025
Table of Contents
An analysis of the latest data on COVID-19, influenza, and RSV circulation in Luxembourg, published by the Health Department.
Overview
the Luxembourg Health Department publishes a weekly retrospective report detailing the evolution of key acute respiratory infections, including COVID-19, influenza, and respiratory syncytial virus (RSV). This report provides crucial data for monitoring public health trends and informing preventative measures.
Flu (Influenza): Decreasing Cases
During week 52, spanning December 22nd to 28th, 2025, laboratory-confirmed influenza cases decreased by 15%, falling from 640 to 544 cases. This decline coincides with the school holiday period, a trend observed in previous seasons.
Of the influenza cases that were typed, 99.6% were influenza A and 0.4% were influenza B. This dominance of influenza A is a significant factor in understanding the current outbreak’s characteristics.
Despite the decrease,the Ministry of Health and Social Security emphasizes that seasonal flu circulation remains high. Vaccination is still recommended, with a primary focus on individuals aged 65 and over, who are at the highest risk of developing complications from the flu.
Influenza Strain Breakdown (Week 52, 2025)
| Influenza Type | Percentage of Typed Results |
|---|---|
| Influenza A | 99.6% |
| Influenza B | 0.4% |
COVID-19 and RSV
The provided source material does not contain data regarding COVID-19 or RSV trends for week 52, 2025. Future reports will likely include data on these viruses as well.