- The short answer: lots and lots of hand-washing, says Terry Anders, clinical educator at the Zangmeister Cancer Center in Ohio. Keep antibacterial soap in all bathrooms and next to the kitchen sink, and keep antibacterial wipes and hand purifying gel in the car, your purse, and anywhere else it might come in handy.
- Use a disinfectant cleanser on all cooking and food preparation surfaces. When serving food, follow the basic rule of "cold food cold" and "hot food hot." Food that needs refrigeration should be left in the fridge until just before serving, and hot dishes, particularly those containing meat, should be heated through before serving.
- It probably goes without saying, but make sure he stays away from raw or undercooked meat and raw fish and shellfish when his immune system is compromised.

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