You can start from wikipedia[1] and especially checkout references part. Unfortunately as you go deep it's really hard to find articles in layman's language. I

You can start from wikipedia[1] and especially checkout references part. Unfortunately as you go deep it's really hard to find articles in layman's language. I think it's because articles in layman's language are more targeting the average reader. I hope someone can comment with a good article. [1] https://en.wikipedia.org/wiki/Coronavirus_disease_2019 https://en.wikipedia.org/wiki/Coronavirus_disease_2019