Some people think that parasitic infections, like colds or the flu, are caused by viruses and bacteria. The truth is that they are caused by parasites. Parasites make up nearly 20% of all human infections, according to the World Health Organization. In fact, some parasites cause diseases like tuberculosis or malaria, which can be serious. Parasites also live on your skin and inside your body. In fact, there are hundreds of types of parasites (in addition to the usual ones). Most parasites come from your feces, and some people are even infected by eggs or larvae. When a parasite enters the body, it becomes a living organism. And when a parasite attaches itself to a certain place in the body (a hair follicle, a muscle, a gland, or a bone), that place becomes a new parasite. And if it lives for a while, that new parasite can invade another part of the body, sometimes making it very difficult to get rid of the parasites. So, how can people get rid of parasitic infections, if they are not diagnosed? Well, in many cases, it is simply impossible for a doctor to diagnose parasites. They have to look at an infected person, and if a person has many parasites, it's obvious he has a large number of them.