You won't believe how many people the flu killed last year. Last winter the flu killed more than 80,000 people in the U.S. It's the highest number recorded in 40 years!
Colin Bucks, an emergency medicine physician at Stanford Health Care, tells BuzzFeed News. "It’s frustrating because it's preventable. It's stuff we prepare for every year."
People who are older, have children or are pregnant are especially urged to get vaccinated.