So, my mom is in the hospital with pneumonia-covi...

So, my mom is in the hospital with pneumonia-covid , I live at home with her and my dad. They say they can only allow one guest per patient, because she is going into the covid unit can someone please tell me the logic? I live with them I see them everyday. I dont have covid and my dad just got over it. This place is awful. Imagine not letting family see their family members.