Virus concern

Hello all, I have a cruise that is set to leave next Friday. My husband and myself will be going on the cruise. The cruise leaves from LA and goes into Mexico it is a three day cruise. I am concerned because if for some reason the cruise has a case of corona virus and we were quarantined my husband will lose his place at nursing school. As he cannot be gone for that long. I have done the readings and I understand that getting the flu is more likely than contracting coronavirus. However I have that little voice in the back of my head that says It could happen to you. I need some advice am I being unrealistic and should I just go on the cruise. Should I leave my husband at home. Or should I just cancel the cruise altogether. I have already called Carnival and they said we will only get $100 back for a refund. Thoughts?