Rose - Chris at Hallson's has been saying that the new thinking is you should never plant another hosta in the same location. At any rate, you need to ensure you don't plant another hosta there until and traces of root left in the hole have died and rotted away.
mcash70 - if HVX is new to you, please check out these links:
http://www.hostalibrary.org/fi...
http://www.inthecountrygardena...
Buy any new hostas only from nurseries that know about HVX and buy from suppliers that test their stock. Box stores have a high percentage of infected plants.
Treat any new plant no matter, where you got it, as potentially infected and keep it separate from other hostas for awhile.
Develop a habit of always completely cleaning your tools between plants. Alcohol or bleach wipes work well.
The problem with HVX is that it can be in a plant and not show symptoms for several years. In a few varieties, it may never show symptoms. So if you aren't careful, you can spread the virus.
HVX can be managed, but there are still many people who don't know about it or don't care.