A few people have reported that their candida has been helped by helminthic therapy.
My oral (candida) issues subsided to nothing over a year, doing nothing but helminths. 
I do think hookworm has helped dealing with candida. Just from the perspective that I haven't had to go on antibiotics, which was an all the time occurrence before, with my bad sinuses. (Reported in a private discussion, 2011.)
I suffer from candida and am not sure that hookworms have changed that but they seem to have dampened my body's reactions to the candida. I have less burning and itching down below and in my eyes, feel stronger and more vital, my mouth is less raw, my stomach more stable and I can tolerate more foods, etc. 
… i've noticed reduced candida symptoms since doing HT, such as improved skin, no more colitis, but you're probably correct that rather than killing off the candida, it's dampening how my immune system overreacts to the yeast. 
However, some people continue to have issues with candida while hosting helminths, and two individuals - one with NA, and the other with HDC - have said that their candida got worse while hosting worms.
I've started HDC and seem now to suffer chronic candida. It was there before but now it's insane (more itching and more discharge - nice!). 
It may therefore be a good idea to try to reduce a candida infection as much as possible before commencing helminthic therapy, and then take antifungals concurrently with it, if necessary, making sure to use worm-friendly alternatives if hosting human helminths. See the Antifungals section of the Human helminth care manual for worm-friendly treatment options.