Is it fair?

I've been extremely ill for the last week, and in turn was forced to miss school and work. I called in sick to work twice in a week and once the week before for another sickness. Yesterday my boss confronted me and asked if he should put me on the schedule anymore, because I obviously am not taking my job seriously. I told him that my job is very important to me, and I want to keep it. I've just been very sick, and I apologized. It was even obvious I was sick too, I was sniffling and coughing really badly when I went into work next, but he still told me I was being irresponsible. Is this fair? I think not. I wouldn't want me serving food to people in a restaurant that sick. ew.