Portugal data shows natural immunity highly effective

Portugal did an analysis on about 5 million people to see how effective natural immunity from early strains was against Omicron5 infection .
People who had the wuhan strain had 54% protection, alpha 58%, Delta 64%, and people with the Omicron 1,2 had 76% protection. This clearly demonstrates that natural immunity is highly effective against future strains. This in a country with 90% vaccination, and where the Vaccines failed to protect.
The UK authorities approved the pfizer vaccine on very shaky grounds. 43000 people were enrolled in the study. One group received the Vaccine and the other placebo.
8 people had severe infections in the Vaccine group and 28 in the control group. Pfizer used this as evidence that the Vaccine reduces severity.
What is not mentioned is that it doesn't reduce mortality. This is a major immission. Further, no mention is made of the several and severe side effects, (including death, Myocarditis, heart attacks, strokes, paralysis, bllod dyscrasias, Cancer, miscarriages, foetal abnormalities, Bells Palsy, Parkinson, brain dysfunction etc) whereas these adverse events are extremely rare, desth from omicron 5 is minimal and so are hospitalisations.