Can you get sick from eating plant eating caterpillars?

Yes, you can get sick from it. Maybe not in human form, but in animal form. Aphids are known as a parasite. My own dog has been sick for a week because the aphids are falling out of the trees. They land in her food and water bowl, she eats or drinks them. She has been sick for a week now after the parasites started falling out of the trees.