It's that time of year when everyone starts to get sick and pass around their cold and flu germs. Having cancer means that your immune system may be compromised, which makes picking up other people's winter illnesses harder to avoid. However, you don't have to lock yourself away until spring, just heed some basic advice on how to keep those nasty germs at bay. 1. Get a Flu Shot This is the most important and one of the easiest things you can do to avoid getting the flu. Source: WebMD Learn more about the signs and symptoms to look out for when doing a breast self-exam.