I used to buy enokis (they are nice in miso soup) but gave up on them after too many recalls.
The reason, as far as I know, is due to Listeria contamination due to lack of proper hygienic practices when grown.
Most are imported from Korea, shipped here, and repackaged for both wholesale and retail sales.
It's not much of a surprise that a contaminated item of produce that has to be shipped fresh and kept moist is problematic.