Phase 1 trials take several months. Phase 2 trials take months to 2 years. Phase 3 trials take 1-4 years. https://www.fda.gov/patients/drug-development-process

Phase 1 trials take several months. Phase 2 trials take months to 2 years. Phase 3 trials take 1-4 years. https://www.fda.gov/patients/drug-development-process/step-3-clinical-research https://www.fda.gov/patients/drug-development-process/step-3... In the case of Pfizer-BioNTech, the Phase 3 trial was started before Phase 2 even completed, and was completed in less than 8 months. https://clinicaltrials.gov/ct2/show/NCT04713553 https://clinicaltrials.gov/ct2/show/NCT04713553 Even with the rather expanded definition of "died while infected with COVID-19," the mortality rate is approximately 1.5% (845627 deaths / 55202306 cases) in the United States, or 25% lower than you claimed. https://www.worldometers.info/coronavirus/country/us/ https://www.worldometers.info/coronavirus/country/us/