Intestinal worms, also known as parasitic worms, are one of the main types of intestinal parasites. Common types of intestinal worms include: flatworms, which include tapeworms and flukes.

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African Sleeping Sickness (African trypanosomiasis)

Alveolar Echinococcosis (Echinococcosis, Hydatid Disease)

Amebiasis (Entamoeba histolytica Infection)

American Trypanosomiasis (Chagas Disease)

Ancylostomiasis (Hookworm)

Angiostrongyliasis (Angiostrongylus Infection)

Anisakiasis (Anisakis Infection, Pseudoterranova Infection)

Ascariasis (Ascaris Infection, Intestinal Roundworms)

Babesiosis (Babesia Infection)

Balantidiasis (Balantidium Infection)

Canon picture style download. Baylisascariasis (Baylisascaris Infection, Raccoon Roundworm)

Bilharzia (Schistosomiasis)

Blastocystis hominis Infection

Body Lice Infestation (Pediculosis)

Capillariasis (Capillaria Infection)

Cercarial Dermatitis (Swimmer’s Itch)

Chagas Disease (American Trypanosomiasis)

Chilomastix mesnili Infection (Nonpathogenic [Harmless] Intestinal Protozoa)

Clonorchiasis (Clonorchis Infection)

CLM (Cutaneous Larva Migrans, Ancylostomiasis, Hookworm)

“Crabs” (Pubic Lice)

Cryptosporidiosis (Cryptosporidium Infection)

Cutaneous Larva Migrans (CLM, Ancylostomiasis, Hookworm)

Cyclosporiasis (Cyclospora Infection)

Red dead redemption 2 license key download. Cysticercosis (Neurocysticercosis)

Cystoisospora Infection (Cystoisosporiasis) formerly Isospora Infection

Diphyllobothriasis (Diphyllobothrium Infection)

Infection (dog or cat tapeworm infection)

Dracunculiasis (Guinea Worm Disease)

Dog tapeworm(Dipylidium caninum Infection)

Echinococcosis (Cystic, Alveolar Hydatid Disease)

Elephantiasis (Filariasis, Lymphatic Filariasis)

Endolimax nanaInfection (Nonpathogenic [Harmless] Intestinal Protozoa)

Entamoeba coliInfection (Nonpathogenic [Harmless] Intestinal Protozoa)

Entamoeba dispar Infection (Nonpathogenic [Harmless] Intestinal Protozoa)

Infection (Nonpathogenic [Harmless] Intestinal Protozoa)

Infection (Amebiasis)

Enterobiasis (Pinworm Infection)

Fascioliasis (Fasciola Infection)

Fasciolopsiasis (Fasciolopsis Infection)

Filariasis (Lymphatic Filariasis, Elephantiasis)

Giardiasis (Giardia Infection)

Gnathostomiasis (Gnathostoma Infection)

Guinea Worm Disease (Dracunculiasis)

Head Lice Infestation (Pediculosis)

Heterophyiasis (Heterophyes Infection)

Hookworm Infection, Zoonotic (Ancylostomiasis, Cutaneous Larva Migrans [CLM])

Hydatid Disease (Cystic, Alveolar Echinococcosis)

Hymenolepiasis (Hymenolepis Infection)

Intestinal Roundworms (Ascariasis, Ascaris Infection)

Infection (Nonpathogenic [Harmless] Intestinal Protozoa)

Isospora Infection (see Cystoisospora
Infection)

Kala-azar (Leishmaniasis, Leishmania Infection)

Leishmaniasis (Kala-azar, Leishmania Infection)

Lice Infestation (Body, Head, or Pubic Lice, Pediculosis, Pthiriasis)

Liver Flukes (Clonorchiasis, Opisthorchiasis, Fascioliasis)

Loiasis (Loa loa Infection)

Lymphatic filariasis (Filariasis, Elephantiasis)

Malaria (Plasmodium Infection)

Microsporidiosis (Microsporidia Infection )

Mite Infestation (Scabies)

Neurocysticercosis (Cysticercosis)

Ocular Larva Migrans (Toxocariasis, Toxocara Infection, Visceral Larva Migrans)

Onchocerciasis (River Blindness)

Opisthorchiasis (Opisthorchis Infection)

Paragonimiasis (Paragonimus Infection)

Pediculosis (Head or Body Lice Infestation)

Pthiriasis (Pubic Lice Infestation)

Pinworm Infection (Enterobiasis)

Plasmodium Infection (Malaria)

Pneumocystis jirovecii Pneumonia

Pseudoterranova Infection (Anisakiasis, Anisakis Infection)

Pubic Lice Infestation (“Crabs,” Pthiriasis)

Raccoon Roundworm Infection (Baylisascariasis, Baylisascaris Infection)

River Blindness (Onchocerciasis)

Sarcocystosis (Sarcocystosis Infection)

Schistosomiasis (Bilharzia)

Sleeping Sickness (Trypanosomiasis, African; African Sleeping Sickness)

Strongyloidiasis (Strongyloides Infection)

Swimmer’s Itch (Cercarial Dermatitis)

Taeniasis (Taenia Infection, Tapeworm Infection)

Tapeworm Infection (Taeniasis, Taenia Infection)

Toxocariasis (Toxocara Infection, Ocular Larva Migrans, Visceral Larva Migrans)

Toxoplasmosis (Toxoplasma Infection)

Trichinellosis (Trichinosis)

Trichinosis (Trichinellosis)

Trichomoniasis (Trichomonas Infection)

Trichuriasis (Whipworm Infection, Trichuris Infection)

Trypanosomiasis, African (African Sleeping Sickness, Sleeping Sickness)

Trypanosomiasis, American (Chagas Disease)

Visceral Larva Migrans (Toxocariasis, Toxocara Infection, Ocular Larva Migrans)

Whipworm Infection (Trichuriasis, Trichuris Infection)

Zoonotic Diseases(https://www.cdc.gov/parasites/animals.html) (Diseases spread from animals to people)

Zoonotic Hookworm Infection(https://www.cdc.gov/parasites/zoonotichookworm/index.html) (Ancylostomiasis, Cutaneous Larva Migrans [CLM])

Symbiotic relationships between a parasite and a host can have beneficial effects, even changing human personality and evolution. Often, however, the damage outweighs the positives. New Scientist investigates some of the most common human parasites and the damaging effects they can have

Hookworm

(Necator americanus)
This parasitic nematode worm begins life outside the body and is transmitted through contaminated water, or fruits and vegetables.
The hookworm larvae grow inside the human intestines where they attach to the wall of the intestine and drink the blood of the host, sometimes causing a form of anaemia called anchylostomiasis.
Symptoms: weakness, abdominal pain, nausea, diarrhoea, anaemia
(Image: Science Photo Library)

Scabies mite

(Sarcoptes scabiei var. hominis)
Commonly known as the human itch mite, the parasite is transferred by physical contact.
The female mite lays her eggs on the skin of a human, causing a reaction and inflammation.
This is exacerbated when the mother begins burying the eggs under the skin causing intense itching, a condition commonly known as scabies.
Symptoms: itching, soreness, pus-filled nodules, skin irritation
(Image: Science Photo Library)

Roundworm

(Ascaris lumbricoides)
These are the largest of the intestinal nematodes affecting humans, growing to 15-35 centimetres in length.
They are transferred by ingestion. The eggs hatch and quickly penetrate the intestinal wall, where they enter the bloodstream.
From there, the roundworm makes its way to the lungs, from where it is coughed up and swallowed, returning it to the gut.
Symptoms: fever, tiredness, allergic rash, vomiting, diarrhoea, nerve problems, wheezing / coughing
(Image: Science Photo Library)

Flatworm blood fluke

(Schistosoma mansoni, S. haematobium, S. japonicum)
These small flukes live in the bloodstream of infected hosts and cause schistosomiasis, also called bilharzia.
They live in water, and penetrate the skin of victims who come into contact with contaminated water.
The parasite causes inflammation (swelling) and damage to organs, particularly the liver.
The adult worms can persist in their human host for decades, and may not cause any symptoms for years.
They leave the host in faeces and spend part of their lifecycle in a snail host.
Symptoms: fever, aching, cough, diarrhoea, swollen glands, lethargy
(Image: Science Photo Library)

Tapeworm

(Taenia solium)
Transmitted through infected food, a tapeworm attaches itself to its victim's intestine with hooks on its 'head', or scolex.
They mature over three to four months, during which time the reproductive organs develop.
Tapeworms can survive for up to 25 years in humans.
Their eggs are excreted in faeces and can survive on vegetation, where they are then consumed by cattle or pigs, or passed on to humans.
Symptoms: nausea, vomiting, inflammation of the intestine, diarrhoea, weight loss, dizziness, fits, malnutrition
(Image: CDC)

Pinworm

(Enterobius vermicularis)
Pinworms are a common human parasite, causing enterobiasis.
Adult females range from 8 to 13 millimetres in length and have a long, pin-shaped posterior, for which the worm is named.
Pinworms mate by traumatic insemination - the male stabs the female with his penis - after which the male dies.
They make their home in the host's intestines, but unlike many parasites they do not pass into the blood and cannot survive in other parts of the body for any length of time.
They lay their eggs outside the body, usually around the anus, causing itching: this assists the larvae's spread via hand contact.
Symptoms: Irritation and scratching
(Image: Public Health Image Library)

Wuchereria bancrofti
Mosquitoes carry this parasite, which they release into the bloodstream of a human host as they feed.
The larvae move to the lymph nodes, which are predominantly in the legs and genital area, and develop into an adult worm over the course of a year.
They are commonly responsible for the tropical disease filariasis, but in extreme cases can cause elephantiasis.
Symptoms: fever, chills, skin infections, painful lymph nodes, thickened skin, swelling
(Image: Sinclair Stammers/Science Photo Library)

Toxoplasma gondii

A common, crescent-shaped parasite that invades the central nervous system.
Humans become infected with this organism by eating undercooked meat or by handling infected cat litter.
Most people have been exposed to this parasite and show antibodies for it, but few individuals show symptoms.
Those with a compromised immune system are more susceptible, and fetuses can suffer serious or fatal effects from infection.
Symptoms: flu symptoms, fever, chills, fatigue, headache
(Image: Ke Hu / John Murray)

Giardia lamblia

Giardia lamblia is a flagellated protozoan parasite.
It lives and reproduces in the intestine, causing an infection of the small intestine known as giardiasis.
When it takes up residence in a human's gut, it results in inflammation and and other damage, reducing the gut's ability to absorb nutrition and causing diarrhoea.
The parasite is highly resistant to water treatment and is known to exist in drinking water.
Symptoms: diarrhoea, nausea, abdominal pain, weight loss, characteristic 'rotten-egg'-tasting burps
(Image: CDC / Janice Carr)

Entamoeba histolytica
This single-celled organism causes a disease called amoebiasis.
It predominantly infects humans and other primates.
It can be found in water, damp environments and in soil, and can contaminate fruits and vegetables.
It spreads through faecal contamination.
Other than the malarial parasite, it causes more deaths than any other protozoan.
Symptoms: abdominal pain, weight loss, weakness, diarrhoea, liver abscess
(Image: CDC / George Healy)