While many parents grow concerned that vaccines cause autism, researchers are coming up with more and more ways to vaccinate young people against disease. The CDC now recommends that children be vaccinated against meningitis when they're starting high school or going away to camp or college, and that preteens have a whooping-cough booster added to their diphtheria and tetanus shot. Do you think these precautions are safe and necessary? Pick as many answers as you agree with from the poll below.