Author summary Why was this study done? There have been an increasing number of cases of type 1 diabetes reported following Coronavirus Disease 2019 (COVID-19) vaccinations. The relationship between receiving COVID-19 vaccines and incident diabetes has not been examined in population-based studies. Several nationwide cohorts reported higher risks of incident diabetes following Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection. The risk of incident diabetes following infection by SARS-CoV-2 Omicron variants may differ from that following infection by earlier variants. It is also uncertain how vaccination status may influence the risk. What did the researchers do and find? This study included 167,337 CoronaVac, 158,378 BNT162b2 recipients, and 145,199 COVID-19 patients with their respective 1:1 matched control. There was no evidence of increased risks of incident diabetes following COVID-19 vaccination. Regardless of predominant circulating variants, SARS-CoV-2
In a retrospective study, Carlos King Ho Wong, Kristy Tsz Kwan Lau, and colleagues study adverse events reported following COVID-19 vaccination in Hong Kong.