http://www.healthdata.org/covid/covid-19-vaccine-efficacy-summary http://www.healthdata.org/covid/covid-19-vaccine-efficacy-su... There's a PDF in this article

http://www.healthdata.org/covid/covid-19-vaccine-efficacy-summary http://www.healthdata.org/covid/covid-19-vaccine-efficacy-su... There's a PDF in this article that links to dozens of independent studies. Or, just google "covid vaccine efficacy" and it pulls up a bunch of links for you. It really only takes a minimum of effort to answer these hard-hitting questions you've posed. As another example, I googled "why are pharmaceutical companies immune from liability over covid vaccine" and found https://www.hsdl.org/?abstract&did=848329 https://www.hsdl.org/?abstract&did=848329 .