Caltech Science Exchange  /  Topics  /  COVID-19 and Viruses  /  Vaccines Developed

Fighting Viruses: How Are Vaccines Developed?

Dive Deeper

Illustration of a syringe
How the Pfizer-BioNTech Vaccine Works (New York Times)
Graphic of a clock showing progress toward a COVID-19 vaccine; vaccine widely available and start of pandemic are at 12:00
USA Today Expert Panel on Vaccines
Centers for Disease Control logo
Vaccine Testing and the Approval Process (CDC)