According to an estimate by the Centers for Disease Control and Prevention (CDC), there were approximately 45 million cases of the flu in the United States during the 2017-2018 influenza season, resulting in an estimated 810,000 flu-associated hospitalizations and an estimated 61,000 flu-associated deaths. It also killed more children than in any non-pandemic year on record, 172. In the 2016-17 season, there were an estimated 29 million flu cases in the United States; and estimated 497,000 flu-related hospitalizations and 38,000 flu-related deaths. (For comparison, 36,560 people died in car accidents in 2018 in the United States.) The CDC reports that...