Aug.17 — Rep. Donna Shalala, a Democrat from Florida, discusses the coronavirus pandemic and the potential for a vaccine. She speaks on “Balance of Power: Democratic National Convention.”
In This Story: Vaccine
A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins.