I can understand you not wanting to eat anything! I ate a cucumber today but made sure that I cleaned it.
Facts are, parasites are everywhere, not matter what you do. The best thing that you can do is keep doing what your doing, but be in AWARENESS of your environment and what's going into your body. No doubt you're already doing this.
You're lucky, we all are! Think of the millions of people who are clueless and doing things to infect themselves which cause diseases and tissue damage by the critters.