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In the first study period (28.9.-22.10.) A total of 10,464 people were evaluated, about half of them from an elementary school (49.7 percent) and an AHS middle / lower school (50.3 percent) .
10,156 samples could be evaluated, 40 of which were positive. This corresponds to an overall prevalence of 0.39 percent, with a fluctuation range (95 percent confidence interval) of 0.28 to 0.55 percent.
Asymptomatic
“This is the first time that we have data on the number of unreported cases of infections in schools,” the scientific coordinator of the study, microbiologist Michael Wagner of the University of Vienna, told the APA. Those who tested positive are people who had no obvious symptoms. In addition to their number, there would also be those children and teachers who had already tested positive for SARS-CoV-2 or who were not in school on the days of the test due to symptoms of an infection not yet diagnosed.
The overall prevalence is very difficult to put into context, Wagner cautioned against “comparing apples to pears.” For example, one might be tempted to compare the prevalence now recorded in schools with the proportion of the population acutely infected during the same period, which is certainly lower. “But that is not plausible because this number does not include the number of unreported cases in the general population and no one has done tests in all of Austria,” Wagner said.
