Flu Wave Intensifies as Weekly Cases Double

In its weekly update for November 24–30, 2025, the Direction de la Santé in Luxembourg reported a 23% drop in confirmed COVID-19 cases falling from 66 to 51. Meanwhile, Influenza (flu) cases more than doubled during the same period, surging from 79 to 173 — a 119% increase, with nearly all identified as Influenza A. 

Infections from Respiratory Syncytial Virus (RSV) also rose modestly from 89 to 93; since October, around 75% of RSV cases have involved children under nine years old. 

Despite fewer confirmed COVID-19 cases, wastewater surveillance showed a slight uptick in SARS-CoV-2 viral concentration, and the variants XFG and its sub-variant XFG.3 remain dominant. 

The contrasting trends declining COVID-19, a flu surge, and ongoing RSV — underscore the shifting landscape of respiratory illnesses as the winter season deepens.

Read More : https://dirsante.gouvernement.lu/fr/actualites.gouvernement2024%2Bfr%2Bactualites%2Btoutes_actualites%2Bcommuniques%2B2025%2B12-decembre%2B04-infections-respiratoires.html?utm_source

Join the community of your own - #1 homegrown LuxExpats app

SignUp Free : luxembourgexpats.lu