Read many, many of these search results and start your list.
https://www.google.com/search?q=how+is+covid-19+dangerous&oq=how+is+covid-19+dangerous&aqs=chrome..69i57j69i60.19339j0j7&sourceid=chrome&ie=UTF-8
If you want someone to check your list, post it here.
How is covid-19 dangerous i need 50 reasons please.
2 answers
50 reasons no I could sum it up with 2 reasons first china second bat soup