The flu doesn’t usually give much notice. One day you’re going about your normal routine, heading to work, running errands in West Knoxville, or managing a busy family schedule, and the next you’re sidelined with fever, chills, body aches, and deep fatigue. Along with feeling miserable comes an important question: How long could I spread this to someone else? Understanding the contagious window helps protect your household, coworkers, and the greater Knoxville ...