Is COVID going around in Germany?

COVID-19 remains a relevant factor for healthcare systems. Vaccinations and prior infections have given much of the population baseline immunity, but vulnerable groups still face a real risk of severe illness. The virus is endemic and produces periodic waves. Risk is now managed through continuous surveillance and targeted protection of at-risk people, no longer through population-wide pandemic measures.

Monitoring is embedded in the RKI's ARE surveillance. Data from doctor's practices (consultation incidence) is combined with virological sampling. Hospitalisations for severe respiratory illness add a further layer. This interplay allows a qualitative assessment (low, moderate, or high) without requiring blanket testing across the population.

The AMELAG programme measures SARS-CoV-2 RNA in sewage plants. Because infected people shed the virus, often before they develop symptoms or get tested, this signal acts as an early-warning system. Rising viral loads in wastewater correlate, with a lag, with rising clinical case numbers. The advantage: the data is independent of individual testing behaviour and gives an unbiased picture of infection dynamics.

So far, COVID-19 shows a less strictly seasonal pattern than classical influenza, though activity typically rises clearly in autumn and winter. Summer waves are also possible, often driven by new virus variants that partially evade existing immunity. Colder temperatures and more time indoors support transmission.

Reinfections are possible due to viral evolution and the natural waning of mucosal immunity. Risk depends on the currently circulating variant and the time since your last immunising event (vaccine or infection). In immunocompetent people, reinfections tend to be milder than the first infection. Each wave still adds to overall disease burden, so tracking dynamics remains important.