The document provides information on several COVID-19 vaccines, including Pfizer, Moderna, Johnson & Johnson, Covaxin, Covishield, Sputnik V, and vaccines from China. It describes the manufacturers, countries of origin, vaccine types, dosing schedules, effectiveness and clinical trial demographics for each vaccine. Overall, the vaccines were shown to effectively prevent COVID-19 illness and reduce severe outcomes, with effectiveness rates ranging from 66.3% to 97% depending on the specific vaccine.