Explain how a vaccine provides immunity against infection. Are there any side effects to the influenza vaccine? Should Karen or Mary worry about developing autism?
Part I—Flu and “Flu” Karen and Mary work at a grocery store. Mary is a nursing student and works part time to pay for her living expenses. Karen has worked at the grocery for nearly 30 years, since she was 22. The two of them are talking when Karen points to one of the tabloids […]