Parasites are animals or plants which must live on (or in) another living organism to survive. They rely on host organisms to provide food, water, and ideal environment conducive for reproduction.
Some parasites are known to live inside human body, which will then affect the person’s health.
Parasites can enter human body when the person eats or drinks contaminated food or water, or they can live on the person’s hair and skin.
Some of the most well-known parasites include gut and stomach worms, skin mites, head and hair lice, and protozoa (single-celled organisms).
Most of those parasites are so small that they are only visible when seen under magnifying glass or microscope. This is not to say that animals can only enter a human body if they are of microscopic size.
There are some animals that are actually big enough to see with the naked eye yet they still find ways to enter a human body or at least live as parasites on the outer layer (skin).
For examples there are thousands of mites on your face at any given time. Mites are microscopic animals related to ticks and spiders. As horrendous as it may sound, there is nothing unusual about it.
During the day, those mites remain hidden in the follicles; and at night, they climb out to the surface to find mates. Mites on your skin and lice on your head can be the least of your problems. They are pale in comparison to the following cases of animals living inside humans.
Here are 10 disturbing stories of creatures living inside humans.
10 Botfly In The Eye
There are only very few things worse and more irritating that an animal getting inside your eye. If it is nothing but a small insect, the redness and temporary blindness are usually easy to treat.
Indeed some insects seem to have tendencies to fly where they don’t belong, including human eye. In most cases the insects will die within minutes and get washed out by tears. Eye irritation heals on its own without medication or medical treatment.
But for a 5-year-old boy in Honduras, the insect inside his eye was a botfly, a much more resilient and parasitic bug than a typical eye gnat. A botfly is a selfish parasite; the female lays her eggs on another living organism, for example a mosquito which will then drop the eggs to a larger animal.
When the eggs finally hatch, the larvae can feed on the host animal. Some botflies prefer to live inside warm-blooded animals including humans. In many cases, a botfly inside the eye should be an easy fix that requires minor surgery.
Unfortunately for the boy, the eggs had hatched and grown into a late-stage larvae in his anterior orbit. The live botfly was successfully removed by an Air Force mobile ophthalmic surgical team.