​Routine vaccinations are the best defense against illnesses. The VFC program was established to ensure that children below the federal poverty level and those without health insurance have access to critical, lifesaving vaccines that can protect their health throughout their lives. Routine vaccinations are the best defense against illnesses. The VFC program was established to ensure that children below the federal poverty level and those without health insurance have access to critical, lifesaving vaccines that can protect their health throughout their lives.