@mwsa1945 I just googled the vaccine and checked out a number of sites and none had depression listed as a side-effect. This was the most comprehensive and straight-forward site for side-effects:
https://www.webmd.com/drugs/2/drug-180345/moderna-covid-19-vaccine-pfeua-intramuscular/details/list-sideeffects
Is it possible that something else in your life is causing depression, or that you are feeling apprehensive about being able to re-enter the world as we knew it soon? Some people have enjoyed their isolation and feel that they will maintain it to a degree after it's no longer necessary. Of course we will probably never again see the world as we did know it. I realize that sounds pessimistic but I think it's true, particularly for people like myself who are older. For me, that is depressing. I really miss traveling, going to restaurants, socializing, and going to my health club.
JK

@mwsa1945 You’re feeling really down; you didn’t get the side effects but you’re feeling depressed. I think these feelings are normal. We so anticipate something that will make everything better, but then nothing changes. We still wear masks and socially distance and don’t go see our families. We just want everything to be over! And it isn’t. And the news just reports all the awful stuff about the virus and people who don’t want the vaccine and and and..... But you are doing the right thing in getting the vaccine so the virus will go away. We all have our down days, me included. What do you usually do to perk yourself up?

@mwsa1945- I've been very depressed, on and off, during this whole year. The excitement of vaccines has worn off and next Sunday I will finally get my first one. I think that you might be feeling that it is a bit anti-climatic. All we have heard is about vaccinations and anticipating them. As my mother used to say anticipation is my worst enemy. She was right. Many people who I have spoken to seem to have a sense of relief but also a letdown. After all, it really is just a vaccine. After all the hype, no whistles will blow, no fireworks will go off. But, instead of the anti-climatic feeling maybe those of us who feel this depression can turn this anticipation around to a feeling of pride. Look what you did! Having the vaccine will hopefully save millions of lives! You are an excellent example of what everyone should be doing.

Also, now that you have done your duty to yourself and mankind, life has gone back to what it was before the vaccine. Nothing has changed for you, really. You still need to mask, wash your hands and stay 6' away. Do you think that this might be the reason? Does a letdown seem possible?

I believe symptoms of depression are emerging for many people as we are vaccinated. The underlying issue has to do with having developed a “comfort zone” during the pandemic, one having to do with isolation, masking and the other rules of pandemic life coming to an end. Transitions are difficult. This may be more true for those of us who are immunocompromised. Particularly difficult is a dichotomy - the vaccine promises a certain safety and society’s moving out of the pandemic while we hear daily from experts who are worried about variants, a fall surge, anti-Vader’s and more.
Treat your self gently as we navigate these choppy waters. Try to get sun (when possible), keep up with exercise and connect with friends and family via safe channels. This too will improve, we will all have to move one step forward at a time until suddenly surprised we find we have created a “new normal”. Don’t forget to breathe, slow deep belly breaths, holding between inhale and exhale for 4-6 seconds when you can during the day.