Preventing HPV-Caused Cancers
What are human papilloma viruses, why do they cause cervical cancer, and how well does the HPV vaccine work?
What Drives Vaccination Rates?
Each state sets its own policies for vaccination requirements and exemptions, and they vary widely across the U.S.
What is Herd Immunity?
When enough people are immune to a disease, the "herd" protects those who cannot safely receive a vaccine.
Tracking Disease Outbreaks
How do epidemiologists figure out the role of low vaccination rates in preventable diseases like measles or pertussis?
Why is Whooping Cough Back?
Pertussis—which can be fatal in infants—is on the rise due to changes in the vaccine, and to more people opting out.
The Autism-Vaccine Myth
How do we know that vaccines don't cause autism, and what do we know about what does contribute to the condition?