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I got tinnitus in both ears after first dose of Pfizer (got a very strong reaction in general, was feeling sick and weak for about 3 days after first shot). Been hesitant about getting the second because I don't want it to get worse.

Interesting to read that I'm not the only one with this reaction. It's been 5 months now so I also assume that its permanent.

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One person I know got high fever, 102-103F, after first Pfizer shot. No side effects whatsoever after the second shot. So, it’s all over the place.

I caught covid in 2020. One of the strange effects was tinnitus in left ear. The strange thing is I started noticing the 'ringing' almost right at same time I dimly perceived I was getting sick, when things were still just at 'mild headache' level.

I wonder if this is the work of spike protein causing some physical damage?

One of the interesting mechanisms is that the spike proteins poke out of already infected cells and activate a calcium-ion channel which ultimately triggers infected cells to fuse together so you get these massive cells with 20 nuclei all producing more virus and fusing other cells.

It seems like this mostly targets reparatory cells, but it's probably not great for hearing/smell if something similar happens to those cells.

https://www.nature.com/articles/d41586-021-02039-y

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