The unbearable loneliness of COVID-19: COVID-19-related correlates of loneliness in South Africa in young adults

•Unprecedent levels of loneliness among young adults in South Africa.•There were gender differences in the experience of loneliness with women reporting higher levels of loneliness.•Self-rated knowledge, risk perception and resilience emerged as significant COVID-19 related correlates of loneliness. This is the first study to examine the association between COVID-19 related variables and loneliness among young adults in South Africa during COVID-19. Participants (N=337) were university students who completed the UCLA Loneliness Scale and five selected subscales of the WHO COVID-19 Behavioural Insights Tool. The mean loneliness scores were significantly higher than previous studies in other contexts as well as studies conducted in the time of COVID-19. Correlational analysis found that greater perceived risk of infection, limited perceived knowledge of COVID-19 and lower appraisals of resilience were associated with increased loneliness. In a regression analysis, when all COVID-19 variables were considered simultaneously, only resilience, self-rated knowledge, and risk perception emerged as significant correlates of loneliness. These findings suggest that loneliness is a significant public health concern in South Africa in the time of COVID-19. It also suggests that self-efficacy and resilience can potentially be reinforced by public health campaigns that focus on enhancing COVID-19-related knowledge and preparedness.