A chimp observing hospitalisations and deaths following vaccine roll out in the UK would come to the conclusion that even a single dose is having a major impact.
A simple comparision of the UK with a "control group" (basically the rest of the EU) would reinforce the conclusions.
Viruses continually mutate. Most are harmless and fail to reproduce. Some reproduce and do no harm. A very few may reproduce, be harmful, and be resistant to the vaccine.
Viruses are not great intellects! There is no virus materplan! If it mutates in dangerous way and is resistant to the vaccine, it will get you whether or not you have been vaccinated.
Early analysis suggests the vaccine materially reduces the extent to which those vaccinated can transmit the virus.
"Don't do vax" are predominantly a risk to themselves rather than anyone else. They are to be pitied, not ridiculed!
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