Andorra Flu Resurges Above Epidemic Threshold, Hits Young Children Hardest

Andorra has seen a resurgence in influenza and acute respiratory infections, with flu incidence climbing back above the epidemic threshold, particularly affecting young children.

Health Ministry data for the week of 9 to 15 February—the seventh week of the 2025-2026 season—shows 145.71 cases of acute respiratory infections per 100,000 inhabitants. Reports vary slightly on the prior week's figure, citing either 125.73 or 130.4, but all confirm an uptick this period. The 0-to-4 age group faces the highest rates, with the 1-to-4 subgroup most impacted by flu specifically.

Flu incidence reached 25.26 cases per 100,000, a rise from 13.78 the previous week, reversing a brief dip below the threshold. Of tested samples, 8.57%—down from 11% last week—were positive for respiratory pathogens. Positives broke down as 33.3% rhinovirus or enterovirus, 25% influenza A, 16.67% respiratory syncytial virus (RSV), and 8.33% other viruses including SARS-CoV-2, adenovirus, and metapneumovirus.

Europe-wide, respiratory viruses continue circulating widely, driving high general practitioner visits in most reporting countries. Flu activity remains elevated but is declining overall, led by A(H3N2) then A(H1N1)pdm09 subtypes. RSV levels are high and increasing in many areas, with hospital admissions rising—primarily among children under five. This season's RSV wave started several weeks later than in the past two years. SARS-CoV-2 circulation stays low across age groups, with fewer hospitalizations than flu or RSV.

Health officials continue monitoring as winter progresses, emphasizing the viruses' role in seasonal illness.