Deteriorating mental health among university students during the COVID-19 pandemic is a serious worldwide public health concern. This study aims to examine the linkage between social media addiction and mental health of university students in Indonesia and to address whether family relationship and religiosity may mitigate the harmful effects of social media on the mental health of students at this time. We collected data from 709 students at universities across the country between June 3 and June 20, 2020. Mental health was measured using 10 items validated by the Center for Epidemiological Studies-Depression (CES-D) scale. We found that students with higher social media addiction scores had a greater likelihood of experiencing mild depression (OR 1.07, CI: 1.02-1.12). Students who had good relationships with their parents and were more religious showed better mental health than those who had poor relationships with their parents and were less religious. This study suggests the need to mitigate university students' mental health risks through reducing social media addiction while encouraging family relationships and religiosity during the pandemic. Keywords Mental health . Social media addiction . University students . COVID-19 pandemic . Indonesia Studies have convincingly documented that social media addiction is common among university and college students and that this addiction is harmful to their mental health (

IntroductionVaccine hesitancy could undermine efforts to reduce incidence of coronavirus disease 2019 (COVID-19). Understanding COVID-19 vaccine hesitancy is crucial to tailoring strategies to increase vaccination acceptance. This study aims to investigate the prevalence of and the reasons for COVID-19 vaccine hesitancy in Malang District, Indonesia.MethodsData come from a cross-sectional study among individuals aged 17-85 years old (N = 3,014). Multivariate ordered logistic regression was used to identify factors associated with postponing or refusing COVID-19 vaccines. The Oxford COVID-19 vaccine hesitancy scale was used to measure vaccine hesitancy. A wide range of reasons for hesitancy, including coronavirus vaccine confidence and complacency, vaccination knowledge, trust and attitude in health workers and health providers, coronavirus conspiracy, anger reaction and need for chaos, populist views, lifestyle, and religious influence, was examined.Results and discussionThe results show that 60.2% of the respondents were hesitant to receive the COVID-19 vaccine. Low confidence and complacency beliefs about the vaccine (OR = 1.229, 95% CI = 1.195–1.264) and more general sources of mistrust within the community, particularly regarding health providers (OR = 1.064, 95% CI = 1.026–1.102) and vaccine developers (OR = 1.054, 95% CI = 1.027–1.082), are associated with higher levels of COVID-19 vaccine hesitancy. Vaccine hesitancy is also associated with anger reactions (OR = 1.019, 95% CI = 0.998–1.040), need for chaos (OR = 1.044, 95% CI = 1.022–1.067), and populist views (OR = 1.028, 95% CI = 1.00–1.056). The findings were adjusted for socio-demographic factors, including age, sex, education, marital status, working status, type of family, household income, religious beliefs, and residency. The results suggest the need for an effective health promotion program to improve community knowledge of the COVID-19 vaccine, while effective strategies to tackle “infodemics” are needed to address hesitancy during a new vaccine introduction program.