Immunity and epidemiology: AP Biology Free Practice Problems & Quiz Questions
In a vaccine trial, 8 % of the unvaccinated group and 0.5 % of the vaccinated group became ill. What is the vaccine efficacy, in %?
In a vaccine trial, 8 % of the unvaccinated group and 0.5 % of the vaccinated group became ill. What is the vaccine efficacy, in %?