Fall and winter are the times of the year when respiratory diseases are most heavily circulating. While the exact timing of flu and RSV season varies from year to year, these diseases typically become more prominent around October and peak between December and February. These respiratory diseases are easy to catch and can cause serious complications for those at a higher risk. Here’s everything you need to know about the flu and RSV diseases as well as how you can protect yourself and others through flu and RSV shots.