Vaccine IQ

Our Vaccine IQ series breaks down key vaccine concepts into accessible, shareable graphics and videos. Designed to help anyone spread positive and accurate information about vaccines, the series touches on topics like herd immunity, how vaccines are made and specific vaccines like MMR, influenza and chicken pox.

Human Papillomavirus (HPV)

As of March 2022, more than 115 countries had introduced the HPV vaccine into their national routine immunization schedules. The rate of introduction in low- and middle-income countries which carry the greatest share of disease still remains significantly lower than in high-income countries.


The highly effective HPV vaccine can reduce cervical cancer rates by nearly 90 percent


Only 13 percent of girls in the world are fully vaccinated


More than 90 percent of cases of cervical cancer are caused by HPV

How Vaccines Are Made

Vaccine development is a lengthy, rigorous and complex process. This overview covers a vaccine’s journey from initial discovery through clinical trials to your doctor’s office.

Pre-Clinical Vaccine Development

Learn about the tests vaccine candidates must go through to ensure their safety and efficacy.

Clinical Vaccine Development

Explore the four phases of clinical trials, when vaccines are tested and evaluated in humans.