| Updated: 9:51 p.m. Sean Murphy has a trick to getting teen boys to relax when they’re nervous about getting jabbed in the arm with a COVID-19 vaccination. Murphy, an EMT working at the Salt Lake County Health Department’s mass-vaccination site at Sandy’s Mountain America Expo Center, goes through the standard questionnaire with each person. He runs down a list of potential health conditions, and with the boys he will pause ever so slightly when he asks: “Are you pregnant or breastfeeding?” The question made Christopher Whitehead, a 13-year-old from West Jordan, smile — and made his dad, Chris, chuckle.