Ask yourself: how quickly was this article published? Does it seem to include many other already published resources, or is it ahead of the curve with large, unsubstantiated claims?
What website does it come from? What is the ending to the URL? Educational (.edu), governmental (.gov), and organizational (.org) sites are generally stronger sources than commercial websites (.com) which may be looking for increased traffic.
Who wrote it? Are they a medical professional or someone steeped in the knowledge of the subject, or is this a reporter looking for an engaging headline?
Avoid clickbait, which generally includes a title that is a question pretending to be a statement. This is enough to make a claim without having to back it up (E.g. “Are PC Gamers Really Superior?!”)
Find information from organizations who are established institutions responsible for addressing large scale illnesses. The Center for Disease Control and Prevention in the United States (CDC) and the World Health Organization (WHO) are great resources specifically to learn more about COVID-19 and best practices to stay safe and healthy!