Shellie,
I know that this is all so overwhelming and difficult. My husband’s situation was different, but he also had several external tubes to drain from the wound site and it was also imperative that we prevent infection. We used alcohol wipes around where the drains entered his body and also when changing the drainage bulb. I also wiped anything he would come into contact with (telephone, tv remote etc.) with Clorox wipes frequently, and had our kids wash hands well before approaching him. Another thing you can do is to monitor temperature daily so that, should an infection start to develop, you can catch it early and get treatment (Tylenol, antibiotics, etc) to him right away.
I’m sorry you are going throuGh this and hope my suggestions help a bit.
Debbie