Just an update. I finally heard from Mass General this morning advising patients with certain medical conditions to get the third shot. Better late than never.

Who needs a third dose of Pfizer or Moderna COVID-19 vaccines?

People who are moderately to severely immunocompromised should get another dose. These are people who:

Are actively being treated for cancer
Have received a solid organ transplant and are taking medicine to suppress the immune system
Have received CAR-T cell therapy
Have received a stem cell transplant within in the last 2 years or are taking medicine to suppress the immune system after a stem cell transplant
Have moderate or severe primary immunodeficiency (such as DiGeorge syndrome, Wiskott-Aldrich syndrome)
Have advanced or untreated HIV infection (i.e., a CD4 count of less than 200)
Are taking high-dose corticosteroids (i.e., the equivalent of 20 or more milligrams of Prednisone a day)
Are getting other drugs that may suppress the immune response (i.e., tumor-necrosis blockers or other biologic agents that are immunosuppressive or immunomodulatory)

It also said:
Do I have to get the same vaccine I got for the first two doses? You should get the same vaccine for your third dose as you have for the first two. But if it is not available, you can get the other vaccine. This means that if you got Pfizer for your first two doses, and it is not available, you can get Moderna for the third dose. However, whether you got Pfizer or Moderna, you should not get Johnson & Johnson as a third dose. Also, you should not get more than three doses of either the Pfizer or Moderna vaccines.

I'm very glad that I went ahead on Monday and got my third dose. Even though I will still be masking, etc., I will feel a little bit safer after the two-week waiting period is over. I think this will be as safe we can get, ever or at least for a very long time. Reaching "herd immunity" is not going to happen, unfortunately. There are a lot of businesses that are still at risk due to Covid and I think that is true for the hospitality industry. I know many people who will not be dining inside of restaurants when the weather gets too cool to dine outside. Restaurants are one of the riskiest environments there is.
JK