A COVID variant that circulated at low levels through 2024 and 2025 now accounts for roughly one-third of sequenced cases in Denmark during peak weeks, with severe outcomes remaining heavily concentrated in older adults while children appear to drive much of the community spread.
The BA.3.2 subvariant, nicknamed Cicada, first appeared in South Africa in November 2024, according to CDC genomic surveillance reports. Rather than disappearing, it maintained low-level circulation globally before detections increased in Europe from late 2025. By peak weeks between November 2025 and January 2026, BA.3.2 made up approximately 30 percent of all sequenced SARS-CoV-2 samples in Denmark, Germany and the Netherlands, as reported by the CDC. Early reports from clinicians suggest BA.3.2 may be more prevalent among children in some settings, but age-specific Danish data are not publicly available from the Danish Covid-19 Genome Consortium.
This is not the pandemic of 2020. Denmark recorded 86 excess deaths per 100,000 inhabitants over 2020 to 2022, lower than Sweden’s 117 and Finland’s 190, according to Nordic comparative mortality research. A nationwide Danish register study of 3.9 million residents aged 17 to 69 found a very low infection fatality rate for people under 51 without comorbidities. Today’s wave looks mild on paper, especially for the young and healthy. But for international families, the practical friction is real.
Where BA.3.2 actually spreads
Danish children spend long hours indoors during winter and spring terms. Mask use and routine testing have been phased out since 2022, according to Danish Health Authority guidance. COVID-19 circulates in schools, and children can bring infections home. For expat families juggling work, childcare and cross-border travel, a mild infection can still derail plans. Some international companies maintain COVID workplace protocols, and some destination countries still require testing or isolation.
According to the CDC, BA.3.2 carries spike protein mutations that have the potential to reduce protection from a previous infection or vaccination. Current vaccines still guard against severe illness, but they are less effective at stopping infection itself. Dr. William Schaffner, an infectious disease specialist, notes that symptoms remain in the familiar cold and flu spectrum and that the variant presents no unique clinical features. Dr. Amesh Adalja from Johns Hopkins adds that high population immunity makes a repeat of early pandemic hospital overload unlikely.
The gap in the data
Public StatBank COVID tables from Statistics Denmark are broken down by age, sex and municipality. They are not broken down by nationality or origin. There is no public table showing whether foreign-born residents, who make up approximately 12 to 14 percent of the population according to Statistics Denmark and Eurostat, are over-represented in infections, hospitalisations or vaccination gaps. For journalists and policymakers, that missing layer matters. For internationals trying to assess their own risk, the absence is frustrating.
What the data do show is that COVID still kills. Among adults 65 and older in Denmark and comparable Nordic settings, annual mortality from COVID-19 is estimated at 88.5 per 100,000, versus 42.9 for influenza and 31.2 for RSV, according to Nordic respiratory-virus burden research. COVID-19 waves driven by variants like BA.3.2 can quietly drive deaths in nursing homes and hospitals without attracting headlines.
What you can actually do
Current vaccines offer meaningful protection against severe illness from BA.3.2, even if infection itself is harder to prevent, according to CDC and expert commentary. Denmark’s official guidance has shifted toward general respiratory-illness advice in line with Danish Health Authority recommendations: stay home when sick, improve ventilation and use masks in crowded indoor settings if you are high-risk.
Parents of school-age children can reduce household risk by ensuring older relatives and chronically ill family members remain current with boosters. If you work for an international firm, clarify sick-day and remote-work policies now, before your child’s next classroom outbreak forces the question. WHO and ECDC pages, classified as a variant under monitoring by both agencies, provide global context and updated recommendations in English.
The tension no one talks about
Denmark’s register-based health data and high vaccination coverage inform policy decisions to keep schools open during BA.3.2 circulation. For most children, infection so far appears mild, based on expert commentary from NewYork-Presbyterian and Stony Brook Medicine specialists. But that creates an invisible tension for international families: higher infection rates in children alongside high mortality risk in parents or grandparents, especially those abroad.
A classroom infection that barely registers in Denmark can complicate travel to countries with stricter workplace or healthcare policies, or quietly seed serious illness in an elderly relative visiting from overseas. Six years in, COVID has not disappeared. It has simply moved to where we are least prepared to see it: in the everyday churn of school colds and in the slow, steady toll on the oldest among us.
