The document discusses flu shots and similarities between COVID-19 and the flu. It states that flu shots work by introducing antigens that produce antibodies to fight infection, and getting vaccinated is the best way to protect against both viruses. Both COVID-19 and flu can spread through respiratory droplets and their symptoms are similar. They can also lead to similar complications like pneumonia. The benefits of flu shots include preventing flu, reducing severity, saving lives especially of children, and helping control spread. Ways to avoid both viruses include social distancing, masks, handwashing and getting vaccinated.