2 week increase in cases now confirmed for the Pfizer vaccine! Efficiency after one dose is not yet clear (85..90% from current data) but collected under unrealistic lock down conditions. So this will go down certainly.
But for the health care system it is good news as 97% of all deaths are from people age > 65 at least here in Switzerland. So the vaccines will help for at least 1-2 years. So if you have comorbidity factors and are younger than 65 and older that 35 (only) then I would look for ivermectin or take a J&J or Sputnik jab.
At this point I'm not sure if any data can be trusted. The experts claim B117/ e484 is more infectious, up to 70% and up to 30% more deadly, yet both infections and deaths are dropping, maybe that would throw the vaccine results off. I think covid is seasonal and new vaccines will be needed each year like the flu