The Swedish Public Health Authority is conducting several investigations to discover the presence of COVID-19 in Sweden. The results of the first national survey , with a total of 2,573 participants, are now clear. They show that about 0.9% of the population had a continuous infection with COVID-19 when the samples were collected during the period of April 21 to 24.
Results from the 679 participants in the Stockholm-based survey showed that a total of 2.3% of the population there had active infection with COVID-19 from April 21 to 24. This is roughly the same proportion as in a previous survey carried out at the end of March – April .
Those who participated in the survey took samples from themselves or their child if they were the guardians of a guest child. Samples were taken from the pharynx and nasal cavity, and participants also submitted saliva samples. The samples were then analyzed in the lab to see if they contained SARS-CoV-2, which is the virus that causes COVID-19.
The results of the investigation will be used, among other things, as a basis for models of the spread of infection by the Public Health Agency.
The Public Health Authority is conducting surveys on the prevalence of COVID-19 infection with the support of the Swedish armed forces.
More detailed results will be presented in the coming days, along with the results of the symptom questionnaire that participants were asked to respond to.
To date, Sweden has reported nearly 28,000 cases, including nearly 3,500 deaths.