You might not give them much thought, but parasites are everywhere. Estimates vary, but it’s likely that at least 40 percent of the species on Earth are parasites, and maybe as many as half.
Parasites- deadly and cool. A parasite is an organism that lives on or in another organism and lives at the expense of that organism. In other words, a parasite takes what it needs to survive from its host and gives nothing in return. Well, it can give quite a bit of suffering.
Are all parasites gross? Not all parasites are deadly and disgusting, but some ghastly examples exist. Brain-eating amoebas, blood flukes, leeches, and the worms that cause lymphatic filariasis, also known as elephantiasis, are all parasites. So are bedbugs and lice. There are many kinds of parasites; some do more damage than others. The really bad ones can be very bad, and the big ones can be astonishing.
What Is the Worst Parasite?
When it comes to the sheer number of deaths it causes, the worst parasite of them all is Plasmodium falciparum. This is one of five species of plasmodia that cause malaria and the one that does the bulk of the damage.
Mosquitoes transmit malaria, but the organism that causes the illness is the parasite, which lives inside the host mosquito. According to the World Health Organization (WHO), malaria infects more than 200 million people each year and kills more than 600,000, mostly children under five.
Read More: Florida Malaria Cases: Why an Outbreak Returned to the U.S.
What Is the Biggest Parasite?
P. falciparum is tiny. But some parasites can grow to be whoppers. The biggest one that infects human hosts is thought to be Diphyllobothrium latum. This parasite can grow up to 30 feet long (at least!). That’s more than four times longer than Shaquille O’Neal is tall. Diphyllobothrium is a tapeworm and can infect (and wiggle around) inside the human intestinal tract.
You can get other tapeworms from pork or beef, but you get Diphyllobothrium latum when you eat raw or undercooked fish. Unpleasant as the idea of a tapeworm is, the good news is that tapeworms typically don’t cause serious symptoms. On the scale of human harm, Diphyllobothrium is a piker compared to P. falciparum.
Often, the only sign of infection with Diphyllobothrium is seeing bits of the worm in your bowel movement, sometimes squirming around. Not pleasant, for sure, but not a killer, either. While infection with a tapeworm often shows no symptoms, it can cause nausea, diarrhea, abdominal pain, fatigue, weight loss, and vitamin and mineral deficiencies.
In some cases, however, Diphyllobothrium can make you very sick. If the worm gets out of the intestinal tract and into the liver, eyes, or brain, the infection can be life-threatening.
How Do You Get Rid of Tapeworms?
Fortunately, tapeworm infections can be easily treated with oral medications.