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Coronavirus disease 2019

COVID-19 is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic. The symptoms of COVID‑19 can vary but often include fever,[7] fatigue, cough, breathing difficulties, loss of...

How to Evaluate Information on the Internet

The internet has made research faster, broader, and more accessible, but convenience does not guarantee accuracy. A polished article may contain outdated claims, a familiar-looking website may lack credible sources, and a widely repeated statement may still be wrong....