Don't very young people get COVID?

No.11917066 ViewReplyOriginalReport
My 31 year old co-worker had COVID. I worked on his side (office, 1 meter away) and we answered the same phone for 3 full days before he was finally suspended.
I am 19 years old and did not get the virus. In addition, I see very few people in their 20s having symptoms. Is it true that it is more difficult to get viruses under the age of 21?