Flu, COVID-19 Cases Fall in Luxembourg

On Thursday 19 February 2026, the Health Directorate of Luxembourg's Ministry of Health and Social Security published its weekly overview of the evolution of major acute respiratory infections, including influenza (flu), respiratory syncytial virus (RSV) and COVID-19 for the week of Monday 9 February to Sunday 15 February 2026 (week 7).

Drop in flu cases

During week 7, the number of flu cases reported by laboratories decreased from 555 to 321, a 42% drop compared to the previous week, marking the fifth consecutive week of decline.

During the last week, influenza A accounted for 98.7% of cases, while influenza B represented 1.3%.

Slight Increase in RSV cases

The number of RSV cases reported by laboratories saw a 3% increase, with 92 confirmed cases compared to 89 the previous week. Since October 2025, 55% of infections have affected children under the age of ten, indicating that the virus primarily affects younger people.

Decrease in COVID-19 / SARS-CoV-2 cases

The number of positive COVID-19 cases decreased from 73 to 66 - down by 10% compared to the previous week. Furthermore, the viral concentration detected in wastewater also showed a decrease. 

The latest available sequencing data reveals that the XFG variant (45.5%), its sub-variant XFG.3 (26.7%) and the NB.1.8.1 variant (18.2%) are predominant.

The ministry recommended the following preventative measures to limit the spread of viruses:

• wash hands regularly with soap and water for 30 seconds, thoroughly rubbing the palms, fingers, backs of hands and under the nails;

• cover one's mouth and nose with a tissue when coughing or sneezing - or use the crook of the elbow;

• throw used tissues in the rubbish bin immediately and then wash one's hands;

• avoid physical contact such as hugs, kisses and handshakes;

• avoid crowds and gatherings during the epidemic season;

• stay home if sick to avoid infecting others;

• ventilate rooms regularly, at least three to four times a day for ten minutes.