No one has said anyone is lying though.
It is fact that no vaccine has 100% efficacy. None.
Sorry, but you’ve completely misunderstood that press release. It’s not saying the vaccine was 100% effective against covid, but only against one particular strain of covid. In addition, the placebo group only 9 fall ill with Covid so there was very little of the virus going around anyway, which means much of the 100% in the teeny tiny sample size of 800 people could literally be due to lack of exposure:
”In South Africa, where the B.1.351 lineage is prevalent and 800 participants were enrolled, nine cases of COVID-19 were observed, all in the placebo group, indicating vaccine efficacy of 100% (95% CI, [53.5, 100.0]). In an exploratory analysis, the nine strains were sequenced and six of the nine were confirmed to be of the B.1.351 lineage. These data support previous results from immunogenicity studies demonstrating that BNT162b2 induced a robust neutralizing antibody response to the B1.351 variant, and although lower than to the wild-type strain, it does not appear to affect the high observed efficacy against this variant.”
This part of the press release has a more accurate figure:
“Results from this analysis of 46,307 trial participants build upon and confirm previously released data and demonstrate strong protection against COVID-19 through six months post-second dose. From the 927 confirmed symptomatic cases of COVID-19 in the trial, 850 cases of COVID-19 were in the placebo group and 77 cases were in the BNT162b2 group, corresponding to vaccine efficacy of 91.3% (95% confidence interval [CI, 89.0, 93.2]).”
But of course, vaccine efficiency is best measured after millions of doses and immunity over a time line of years, instead of 7 days to six months.