Anti-vax claim: Because most dangerous diseases have been virtually eliminated in wealthy countries like the United States, vaccinations have basically become unnecessary.
Debunk: It only takes a few cases for an outbreak to resurface in a population with low vaccination coverage. In fact, due to anti-vaccine paranoia, there’s been several measles (red) and whooping cough (green) outbreaks in the US recently.
Importantly, getting vaccinated protects those around us. A small number of the population are unable to be vaccinated (small children, the elderly), so their protective barrier is vaccinated people around them who stop the spread of the disease. This concept is known as “herd immunity.”