Without further qualification, if someone refers to themselves as vegetarian (in America), the general assumption is that they are lacto-ovo vegetarian. That means they don't eat animal products that require killing the animal, but eggs and dairy are fine.elatin is not vegetarian as it is made from dead animals... any vegetarian, from ovo-lacto in the liberal end to the fruitarian on the extreme end should have an aversion.
Spirilla is a serious bacteria that can cause illness in humans. Spirilla bacteria can be picked up via Lyme disease.
Giardia intestinalis is also a common parasite found in drinking water. Both Cryptosporidium and Giardia intestinalis are found in the fecal matter of an infected person or animal. These parasites can be spread when someone swallows water that has been contaminated with fecal matter from an infected person or animal.