October 30, 2021

Life: Covid booster mix and match Pfizer, day 2

 My worksite is a hospital complex. Sick people gather in hospital, which makes my workplace a high risk place for covid. 

That is why they set up covid vaccine and booster clinic as early as on October, right after booster is approved, along with annual flu shot clinic. On 10/21, CDC expanded booster eligibility, and the expansion covered me. Now I can get booster.


Today, my worksite's president was announcing covid vaccine mandate for all employees. (To clarify, booster is not included in the mandate). I have no objections for the mandate.


On early Feb, I got Moderna vaccines, completing the series. It has been almost 9 months. It may be prudent to get the booster now. So I scheduled covid booster on this past Wednesday (2 days ago).


I am curious if mix and match (using vaccines from different makers) work better than sticking to single source. On paper, they said mix and match gave a good deal of boost in neutralizing antibody amounts. In theory, I anticipate some differences in mRNA sequences between Moderna and Pfizer mRNA vaccines. Mixing them may add some variety to the practice targets (mock covid/spike protein) for my immune system to work up, and it may be better in terms of preparedness for real covid infection.

I can't go beyond speculation unless there are 100 of me and I can set up cohorts of me with proper controls and collect datasets and compare. I'll skip idle reasonings here.


I got Pfizer booster on Wed. I was somewhat concerned that I might have rough side reactions like the 2nd dose, which knocked me out for 48 hours. Just in case, I bought milk and chicken soup cans beforehand.

But overall, my reaction to the booster shot was much milder. By the night, the injection site was aching, but I felt ok. I slept through the night, no problem. 

The next day (Thursday) I woke up with sore muscles (like I had a good exercise), sore throat, and some dullness. But it was not like real sick feeling. Lack of headache, fever, or exhaustion really helped. I went to work. 

Today (Friday) the sore was subsiding. Generally I felt better than yesterday. Probably my reactions to the Pfizer booster shot would be gone by tomorrow.


Now is end of October 2021 (10/29/2021). Personally, I don't feel like preaching importance of booster shot any more, and feel like I'd rather leave the preaching job to some others who are still willing or are in the position to do it as a public official. There are people who already know the importance and will get or have gotten booster. And there are people who listen to entirely different news and information source that I call Tabloid "journalism". These people may or may not be keen with booster, or even the first dose(s) of vaccination. 

Outbreak of delta variant in Aug-Sept 2021 clearly indicated the difference between these two people. One lived their lives and managed. The other also lived their lives, quite a few of them got severe covid and occupied ER and ICU almost selectively. They were the ones who clogged up medical system. They tried horse med (Ivermectin) instead of vaccine, like they did not learn a thing from the malaria med (hydroxychloroquine) saga. Isn't ignorance a sin.


I completed covid vaccines with Moderna, and got a Pfizer booster. I am using latest modern medicine that 2021 can offer, and I am very happy about it. 

2020 and 2021 are different, in terms of our arsenal against covid. Halloween is another opportunity to remember death. Today may be a good time to remember all the death from covid, and do something about it (...hmm am I preaching?).

For the laughs, I have not been able to receive or sense 5G broadband yet.