It worked brilliantly in my case. When I got sick with covid, I got all better in 42 short hours without needing hospital or even any medications. Looks to me like the jabs had stocked up my body with enough anti-bodies to kill virus quickly after it invaded my resoiratory system.
No one in my family was vaccinated. My younger son brought COVID home. Two of us had symptoms that were barely noticeable. Two were hospitalized. That was in 2020.
Now my in-laws have COVID. They are very sick. And have been vaccinated the minute a new booster comes out.
We are all have different reactions to vaccines and viruses.
Because our immune systems are different.
I had the best vaccine the world has ever known which eradicated the 30%+ mortality rate virus from entire globe. I still got infected with smallpox 2 years later at age 10. But survived easily.