A total of 17,000 sampling kits were sent out to randomly selected residents. The survey was conducted in collaboration with the Swedish Public Health Agency and the Swedish Armed Forces.

Just over three percent of the tests that could be assessed were positive. In total, around 6,000 samples were submitted. This is less than the 10,000 test results that the project had hoped for.

- What was most important was that they released people with symptoms to test themselves. So then it was not as attractive to participate, says Magnus Lindh.

Five areas were selected in the study to cover different forms of housing and to have a different character in the areas: Biskopsgården and Bergsjön, Majorna and Haga / Vasastaden and a residential area in Björkekärr in Örgryte.

Now the result will be analyzed further. The data will be mapped to see what the spread of the disease looks like between different districts, gender and ages. The results are expected in week 31.

- It is exciting to see if there are differences between residential areas and ages, says Magnus Lindh.

The large sample only shows if the test subjects were ill with covid-19 at the moment they took the sample. Investigating how many people had already had the disease, via an antibody test, was something that was discussed. It never happened because it was too resource-intensive to do at such short notice, says Magnus Lindh. But such a study could become relevant after the summer.

- We are considering possibly making such a follow-up report on antibodies, says Magnus Lindh.

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