From what I've read, squash plants are less susceptible to the bacterial wilt they transfer than cucumbers and melons. Though I also read that they can spread powdery mildew as well.

I can't answer your question. Just wanted to say that if you constantly have cucumber beetle problems with cucumbers, try switching to County Fair cucumbers. They lack the bitter gene, which the beetles are attracted to. I've never had them since......and that's been many years that I've been growing them. I've never seen cuc beetles cause many problems on squash......nothing like the squash beetle. I've started growing mine up a trellis (butternut squash), and interplanted with marigolds and (most importantly), don't grow zucchini anywhere nearby) and haven't had a squash bug problem (knock on wood!)