I was at my local pharmacy yesterday and they had a sign encouraging people to get a flu shot. The small print on the sign pointed that you should get a flu shot every year. Your students might be wondering, “why do I have to get a flu vaccine shot again this year?” If that’s the case, have them watch the new TED-Ed lesson titled Why Do You Need To Get A Flu Shot Every Year? The lesson does a nice job of explaining why influenza changes and why a new vaccine is developed.