Ben Hasty / MediaNews Group via Getty Images 8:41pm May 14, 2021 Science Science Health & Safety Confused By CDC's Latest Mask Guidance? Here's What We've Learned by Selena Simmons-Duffin The Centers for Disease Control and Prevention shifted its stance this week on the need to wear masks if you're vaccinated. What's that mean for kids? For travel? For work? Experts weigh in.