I'm currently suffering from my seventh dose of cellulitis since May 2020. Incredibly, my GP lets me keep a course of antibiotics in reserve at home, which is a life-saver. I can start taking them as soon as I get the earliest symptoms, and this time, touch wood, I seem to have reined it in to a mild attack. Unless I strike really early it turns severe very quickly and there's always the danger of sepsis. Vigilance is the watchword!