V* with little or no n* is unfortunately characteristic of sv. Sv may or may not cause fever, although generally there is at least some sort of malaise.

As has been said, your best defense is to a) keep up good hand hygiene - don't touch your face without washing hands first for 15-20 seconds with soap, and wash before eating and after using the restroom in any capacity; and b) BLEACH BLEACH BLEACH the bathroom with a strong bleach solution. Even better if you can get your husband to do it for you. Use a different bathroom if possible. Also, make sure your husband is aware that the illness is spread through fecal-oral route generally - i.e. it is VERY important that he wash his hands well after using the restroom as well. He oughtn't prepare food for anyone but himself for a few days.

If you keep your hands clean and out of your face, and wash before you eat and after you use the bathroom, you run little risk of contracting whatever he's got if it is contagious.