Last spring 2023, as part of our survey on acute respiratory diseases, we asked participants about the cold season in autumn/winter 2022/2023. 37,708 DigiHero participants reported a total of 54,813 acute respiratory illnesses. For 79% of these diseases, we were also provided with the results of a SARS-CoV-2 test. This allowed us to identify 9,358 infections as COVID-19 diseases. This means that 25% of DigiHero participants were infected with SARS-CoV-2 during the winter of 2022/2023.

Many people suffer from long-term consequences after infections with the corona virus. This is often referred to as “Long COVID” or “Post COVID”. We used our DigiHero study to ask about infections and symptoms. We were particularly interested in the influence of the virus variants on the development of long-term symptoms. We were able to find that participants who were infected with omicron (as of January 2022) suffered less frequently from long-term symptoms. Only 14%

In September 2022, half a year after Russia started its invasion on Ukraine, we conducted a second round of surveys on the subject of well-being. The results show that fears and concerns about the war have somewhat decreased compared to the week after the war began (when the first survey was conducted). At the beginning of the Russian invasion of Ukraine in March 2022, 69% of respondents stated to be very or fairly afraid of

A week after the start of the Russian invasion of Ukraine in March 2022 we asked participants about their emotional well-being. It was clear that fears and worries concerning the war far exceeded all other fears inquired about. (Fig.) These fears seem to have a noticeable impact on participant’s health. Particularly the heightened anxiety and internal unrest are well above results from previous surveys conducted during different phases of the Corona Pandemic. Women are generally