"Unraveling Covid: 4 Years In, 7 Mysteries Revealed"

In the four years since the declaration of Covid-19 as a global pandemic, scientists have made progress in unraveling some of its mysteries. They have learned more about how the virus spreads, why it affects people differently, and what causes its unusual symptoms. Variations in individuals' experiences with Covid can be attributed to factors such as age, existing health conditions, and vaccination status. Scientists are investigating the concept of "superdodgers" who may have a biological advantage in fighting off the virus, but have only found evidence of certain genetic mutations aiding in rapid virus clearance.