no not covi d. instead a feeling of doubt and regret of the things you couldn't do in 2020. This will then be forwarded with depression and anxiety as you'll feel lost with no hope. You will find yourself looking at old pictures and old friends, wondering how everything changed so fast but don't worry because as soon as you start to think straight, you'll be a much happier person.
disclaimer: i am not trying to overshadow the horrible events of 2020 but mainly stating the feeling we all feel when we think of 2020 may have been if those events hadn't occured.
Eg.1
"I was supposed to go to Canada last May but I couldn't cause of Corona, now my parents are divorced and we can't even leave the house"
"sounds like a case of 2020 sickness"
Eg.2
"I remember how happy I was in 2019, just finished listening to the Hollywood's Bleeding album and was psyched for my Post Malone concert, now i cant fucking eat or sleep because i couldn't go and probably missed out on the time of my life"
"you must have 2020 sickness"
The trauma and mental abuse you have gone through from feeling like life is moving too fast and you just can't catch up. 2012-2017 was your year, some bad things in 2017, 2018 was half good half bad, 2019 was half bad, half good and 2020 was the death of you. People may not show it but they are depressed, wondering where the world is going, if they'll ever be happy again.
"Martin used to be so good at sports but now he just stays at home, in his room crying"
"2020 sickness i guess?"