Abstract
Since December 2019, the coronavirus disease-2019 (COVID-19) has been keeping the world in suspense. Proven risk factors for a severe course of COVID-19 are common diseases like diabetes, hypertension, cardiovascular or respiratory disorders. Until today, little is known about the psychological burden of individuals suffering from these high-risk diseases regard to COVID-19. The aim of the study was to define the impact of the coronavirus pandemic on behavior and mental health in individuals at high risk for developing a severe COVID-19 course. Items assessed generalized anxiety (GAD-7), COVID-19-related fear, adherent/dysfunctional safety behavior, and the subjective risk perception of regarding symptoms, having a severe course and dying because of COVID-19. Data were compared between participants with the high risk diseases and individuals without any of those diseases. 16,983 respondents completed the study. Generalized anxiety, COVID-19-related fear, adherent/dysfunctional safety behavior and subjective risk perception were elevated in participants with high-risk diseases. The increased COVID-19-related fear as a functional concern is a conclusion on the increased risk of a severe course. The functionality of the fear is reflected in people's increased need for security and includes an increase in both adherent and dysfunctional safety behavior that underlines the need for psychological support strategies.