Parvo and a new puppy. Any suggestions?

Hello all. I have somewhat of a tricky situation. I found out that the previous owners of our home had a dog that died of Parvo back in November. Everything has been bleached down with a bleach/water mixture. My puppy is 8.5 weeks old and had her first vaccine at 5.5 weeks. We just brought her home two days ago. What I would like to know is if it is safe to continue to give her the vaccine, she is due for her second one this week. Although everything has been thoroughly cleaned, inside and out, I worry that if I give her the vaccine she may contract Parvo if it lingers anywhere around the premises. We do not plan to take her out anywhere until we find out if she's got an immunity. I have a 6ft block wall around my yard, and it too has been bleached down. Does anyone know of any preventative (somewhat affordable) measures I can take? I'd really appreciate the help. Thanks!