Well since this issue was first identified in larger nurseries and they decided to bring this treasure trove of information to us complete with studies, data, methodology, etc... I'll state the obvious.
It's probably best if people stop getting clones and genetics from these nurseries. The testing is not reliable and any clone you get now that shows negative when you get it could be positive a month or 2 later. So basically there is no way to ensure that any clone you get from these larger nurseries is HPLVD free. We have to thank DHN for bringing this to the grower communities attention. I suggest people forgo the purchase of clones and instead start new plants from seed since even a clone that came from a plant that tested negative could be positive later and you would have brought that pathogen into your grow. And since they also claim that this pathogen can be passed along in seed I also suggest that you avoid seed from any of these outfits that have had incidents of this pathogen.
"That means infected plants can test negative in one test and then test positive several months later."
Joseph Ramahi, chief science officer for Cultivaris Hemp, explains best practices for cannabis cultivators to combat hop latent viroid.
mjbizdaily.com
So the solution for most growers is just to avoid these outfits since there is no guarantee that anything coming from them isn't harboring the pathogen.