The United States is seeing a second peak in flu cases this season. After doctor’s office visits for flu dipped early this year, they jumped past the previous season peak at the end of last month, with a 30% test positivity rate — and there are still months to go.

For a second time this season, at least 41 states are reporting high or very high levels of the flu. Here's how to stay safe.

There are so many illnesses going around, we talk to a doctor for advice on how to protect ourselves.