Background We aimed to investigate the overall secondary attack rates (SAR) of COVID-19
in student residences and to identify risk factors for higher transmission. Methods We
retrospectively analysed the SAR in living units of student residences which were screened
in Leuven (Belgium) following the detection of a COVID-19 case. Students were followed up
in the framework of a routine testing and tracing follow-up system. We considered residence
outbreaks followed up between October 30th 2020 and May 25th 2021. We used …

Background Student residences are at high risk for rapid COVID-transmission due to
crowding and frequent close contact. Aim We aimed to investigate the overall secondary
attack rates (SAR) in student residences and to discern risk factors for higher transmission in
order to improve the evidence base for screening efforts and preventive measures. Methods
In this retrospective case-ascertained study, we analysed data from student residences
screened in Leuven, Belgium between October 2020 and May 2021, following detection of a …