Increased transmission of SARS-CoV-2 in Denmark during UEFA European championships.

Denmark hosted four games during the 2020 UEFA European championships (EC2020). After declining positive SARS-CoV-2 test rates in Denmark, a rise occurred during and after the tournament, concomitant with the replacement of the dominant Alpha lineage (B.1.1.7) by the Delta lineage (B.1.617.2), increasing vaccination rates and cessation of several restrictions. A cohort study including 33 227 cases was conducted from 30 May to 25 July 2021, 14 days before and after the EC2020. Included was a nested cohort with event information from big-screen events and matches at the Danish national stadium, Parken (DNSP) in Copenhagen, held from 12 June to 28 June 2021. Information from whole-genome sequencing, contact tracing and Danish registries was collected. Case-case connections were used to establish transmission trees. Cases infected on match days were compared to cases not infected on match days as a reference. The crude incidence rate ratio (IRR) of transmissions was 1.55, corresponding to 584 (1.76%) cases attributable to EC2020 celebrations. The IRR adjusted for covariates was lower (IRR 1.41) but still significant, and also pointed to a reduced number of transmissions from fully vaccinated cases (IRR 0.59). These data support the hypothesis that the EC2020 celebrations contributed to the rise of cases in Denmark in the early summer of 2021.

Assessing mental health literacy among Danish adolescents - development and validation of a multifaceted assessment tool (the Danish MeHLA questionnaire).

It is recognized that mental health literacy is vital in both the prevention of mental health problems and in mental health promotion and empowerment of adolescents. In spite of this, only a limited number of tools assessing mental health literacy among adolescents have been developed and most of these have not been adequately tested. In this study, a questionnaire assessing mental health literacy was developed and tested using a three-step approach: 1) item generation in which the principles of public patient involvement were essential, 2) item testing and 3) exploration of psychometric properties. Internal consistency of the questionnaire was determined through Cronbach's alpha and confirmatory factor analysis was conducted in order to determine the construct validity of the questionnaire. The results demonstrated partly skewed data, good internal consistency, good Kaiser-Meyer-Olkin and acceptable results in the goodness of fit index. The initial results suggest that the questionnaire developed and validated in this study is valuable in assessing mental health literacy and could provide useful, essential information on the topic. It thus appears to be a promising tool in the promotion and improvement of mental health and early intervention of mental health problems among adolescents.