Mechanisms and clinical relevance of the bidirectional relationship of viral infections with metabolic diseases.

Viruses have been present during all evolutionary steps on earth and have had a major effect on human history. Viral infections are still among the leading causes of death. Another public health concern is the increase of non-communicable metabolic diseases in the last four decades.

Variation in SARS-CoV-2 seroprevalence across districts, schools and classes: baseline measurements from a cohort of primary and secondary school children in Switzerland.

Objectives: To determine the variation in SARS-CoV-2 seroprevalence in school children and the relationship with self-reported symptoms.

Design: Baseline measurements of a longitudinal cohort study () from June to July 2020.

Setting: 55 schools stratified by district in the canton of Zurich, Switzerland.