How Can I Prevent Re-infestation After Passing Various Worms During A Natural Parasite Cleanse, And How Can Persistent Itchiness Be Managed?

Hello, I have been doing an all natural parasite cleanse and did it for 3 weeks. I have been seeing “things” in my stool. Today I decided to sanitarily dissect a small section of my stool and it appears I continue to pass dead worms, but my butt is itchy sometimes. I have a picture of some of the “things” I removed and would like to share them in hope of identifying the type I am passing. It seems as though there are more than one type of worm I am passing. I have been feeling so much better since doing the parasite cleanse, I decided to stay on the vegan, whole food plant based diet permanently (no grains,too). Besides maintaining a vegan diet, how do I stop the cycle of reinfestation, especially since I have an itchy butt still?