COVID-19 Vaccine Trials

COVID-19 vaccine trials are research studies that test new vaccines to ensure they’re safe and effective. Participants receive the vaccine or a placebo (inactive substance) in controlled groups. Researchers monitor them for side effects and whether the vaccine prevents illness. Trials happen in phases: initial small-scale safety tests, larger effectiveness studies, and final checks for rare side effects. Data collected guides regulatory approval and widespread distribution. The process ensures vaccines protect public health while maintaining safety standards.