Which argument best supports the passage's claim that more people should get the flu vaccine to stop the virus from spreading? If too few people get the vaccine, the people who receive it may not be well protected against infection. So the next time you are at the drugstore, and you see No Flu Shots Available, think about the reasons behind it. People become more reluctant to take the flu shot since they don’t think it will fully work. Drug makers are scared to make too many flu shots because they could lose too much money.