[SeekAndFind]

Here’s what Pfizer based the 91.3% figure on:

Of the 927 cases of symptomatic Covid-19 observed through March 13, 850 were in people who received a placebo and 77 in people who were vaccinated.

That corresponds to a vaccine efficacy of 91.3% up to six months after getting the second dose, Pfizer and BioNTech said.

The protection remained generally consistent across age, gender, race and ethnicity, as well as among individuals with underlying health conditions, the companies said.

[SeekAndFind]

Here’s my bottom line concern:

It’s important to discover how long these vaccines can maintain their potency. Is it possible that they would work like a measles vaccine and last a lifetime? Or will it be more like a flu vaccine where a patient would need a yearly shot? If the vaccine needs a yearly dose to be effective, some future vaccines might not.

[SmokingJoe]

So how come the French, the German , Italian and most EU governments banned the Pfizer vaccine and only lifted the ban just in the last week and some of those governments still ban certain age groups from taking Pfizer's covid vaccine?