Did you also know that lots of produce is imported to the united states and canada from mexico?.. Did you know that a large portion of people dont wash thier hands after using the washroom, spreading parasites everywhere? Did you know that there is loads of feces in meat? not to mention god knows what else. parasites are everywhere.
Just look at the lion in africa... he eats his meat right in the dirt, yet not all lions are sick. And none of them use soap, or wash, or things of that nature.
If a person is eating quality produce, and is fasting and keeping thier body healthy they will not have parasites. The body is good in that respect... it knows how to keep itself clean. If it didnt we would all be dead by now.
And if we do get parasites... because we are not eating the correct way... then we can use herbs to cleanse... which is a good thing. However, stating that vegans have more parasites is very possible. I mean a vegan is soemone who technically could be eating only potato chips and sugar. Vegan doesnt mean health...
Now comparing a SAD meat eater to lets saw someone who is raw vegan(for atleast one year)... no contest, you just need to look into thier eyes to see the difference.