Vaccinations save lives, protect our children and are one of our greatest public health achievements. As public health officials, our role is to advance the health of the American people. This must include championing vaccinations.

Diseases like polio, measles, diphtheria and rubella were once common in the United States, afflicting hundreds of thousands of infants, children and adults, and killing thousands each year. Some older Americans may remember the fear associated with polio outbreaks and the era of iron lungs and leg braces — a time when swimming pools and movie theaters closed over concerns about the spread of the crippling disease. Others may recall the heartbreaking wave of rubella in the 1960s that resulted in thousands of newborn deaths, with thousands more born blind, deaf or with other lifelong disabilities.

We cannot let America be faced with these fears again. For those of us who have treated critically ill children with vaccine-preventable diseases, we know firsthand the devastation to the child — and to the family and community — of a death, limb amputation or severe brain damage that could have been avoided by a simple vaccination.

Modern vaccines are highly effective and safe, with most serious side effects being exceptionally rare — and much less serious than contracting the actual disease. But misinformation about vaccines is still widely reported, so we feel it is crucial to state clearly and unambiguously: Vaccines do not cause autism and they do not contain toxic chemicals. That fact was demonstrated again this week in a new study on MMR vaccination by Danish researchers.