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In the second part of the “Ciao Corona” study, a research team from the University of Zurich discovered corona antibodies in 8 percent of the children tested.
This year, hand washing became even more important for kindergarten and school children, here the children of the Hutten school in Zurich.
Photo: Ennio Leanza (Keystone)
The “Ciao Corona” study from the University of Zurich examined children from the canton of Zurich for antibodies to the coronavirus for the second time. In the second phase of the study, 2,500 children from 275 classes and 55 schools participated. An accumulation of children with corona infection was found in only seven classes. A backlog means at least three new cases since the summer of 2020.
However, significantly more infections could be detected than in the first phase of the research: almost 8 percent of all children would have had a corona infection in October, writes the University of Zurich in a Message. These numbers differ greatly by district, that is, between 4 and 22 percent. The average proportion of infected children increased by 6 percent compared to the first phase of the study.
First phase with significantly fewer infections detected
At the end of September, the research team presented the results of the first phase, in which a total of 2,585 schoolchildren from 55 schools in the canton were tested for antibodies against the coronavirus in June and July. At that time, antibodies were detected in 74 children, this was “only” 2.8 percent of the children tested (Read more here).
The investigation team suspected at the time that the number of unreported cases was very high. This is explained, on the one hand, by the fact that only a few children under the age of 12 were tested. Furthermore, children would hardly show typical Covid symptoms, the researchers said.
