New Corona variant XFG Stratus: It really is that dangerous!
The corona variant XFG “Stratus” is spreading in Germany while vaccination recommendations and incidences are being updated.

New Corona variant XFG Stratus: It really is that dangerous!
In Germany, the Corona variant XFG, also known as “Stratus”, currently accounts for around half of all Covid infections. The Robert Koch Institute (RKI) emphasizes that the earlier variant NB.1.8.1 “Nimbus” has now lost its relevance. Despite the spread of the new variant, the number of infected people remains stable, even if the situation cannot be compared with the previous year's figures. Particular attention is paid to the 7-day incidence, which is highest in both Hamburg and Saxony-Anhalt at 1.4 each, while Bremen has the lowest incidence at 0.1.
This information is part of a comprehensive report from the ADAC that explains the current situation in Germany and also addresses the symptoms. The most common symptoms of XFG “Stratus” include fever, runny nose, body aches, hoarseness and dry cough. The RKI also informs that the previous antigen tests can continue to be used as long as they have not expired and have been stored correctly. However, there is no longer any entitlement to free rapid tests; Self-tests are available in pharmacies and shops. Doctors can still order PCR tests for specific symptoms, regardless of a positive rapid test.
Vaccination recommendations and protective measures
A broad basic immunity in the population, both through vaccinations and through previous infections, is viewed as positive by experts. According to the new recommendations, booster vaccinations are advisable for people aged 60 and over, as well as for people with previous illnesses and those working in the healthcare sector. These should generally take place after 12 months since the last vaccination or infection. A vaccine from Biontech adapted to the current variants has been available since mid-August 2024.
The WHO has also determined that the vaccines continue to be effective against severe disease caused by the Stratus variant. In Germany there is currently no requirement to wear a mask on public transport or other areas. However, wearing a mask can be useful for immunocompromised people. As a general protective measure, it is recommended to stay at home in the event of acute respiratory infections, reduce contacts, sneeze or cough into the crook of your arm and wash your hands regularly.
Global expansion of Stratus
A look at Switzerland shows that the XFG variant is also becoming more widespread there. According to a report by the Tagesanzeiger, Stratus was first detected in January 2025. In just four weeks, the global proportion of this variant rose from 7.4% to 22.7%. Stratus is particularly prevalent in Southeast Asia with 68.7%. By the end of June, the variant was responsible for 16.7% of all infections in Europe. The symptoms are similar, with hoarseness, a dry, irritating cough and a sore throat common. Less common symptoms include nausea and skin rashes.
Given these developments, willingness to vaccinate remains crucial. As vaccination rates increase, it is to be expected that more vaccinated people will become infected. However, this does not mean that the vaccines are ineffective. Rather, a high vaccination rate reduces the total number of hospitalized cases, even if the proportion of vaccinated people among those infected increases. Samboladres follow the motto: The more people are vaccinated, the lower the risk of severe disease for everyone.
In summary, despite the new challenge posed by the XFG “Stratus”, we should show less concern and more common sense. A careful approach and sticking to common recommendations make a big difference.