Why I got my one-year-old vaccinated against polio

It’s a Thursday afternoon, and I should be at work. Instead, I’m chasing my toddler around the small, disheveled garden behind my doctor’s office, along with around 15 other parents. We’re all here for the same reason—to get our young children vaccinated against polio. “We’re doing about 200 children today,” the nurse tells me. My…