Ceban F, Nogo D, Carvalho IP, et al. - Via performing a systematic review and meta-analysis, researchers aimed to determine if pre existing mood disorders are linked with higher risk of COVID-19 infection, hospitalization, severe complications, and death. A total of 21 studies that involved more than 91 million individuals were included in this review. Pooled odds ratios for COVID-19 hospitalization and death were significantly higher for individuals with preexisting mood disorders vs those without mood disorders. No associations were identified between preexisting mood disorders and risk of COVID-19 infection or severe events. Based on these results, they recommend categorizing individuals with mood disorders as an at-risk group for COVID-19 hospitalization and death, providing a basis for vaccine prioritization.