Classification of echinococcus granulosus
Who Echinococcus classification?
| Echinococcus | |
|---|---|
| Class: | Cestoda |
| Order: | Cyclophyllidea |
| Family: | Taeniidae |
| Genus: | Echinococcus Rudolphi, 1801 |
What type of parasite is Echinococcus granulosus?
Parasites – Echinococcosis
Cystic echinocccosis (CE), also known as hydatid disease, is caused by infection with the larval stage of Echinococcus granulosus, a ~2–7 millimeter long tapeworm found in dogs (definitive host) and sheep, cattle, goats, and pigs (intermediate hosts).
What is the characteristic manifestation of Echinococcus granulosus?
Alveolar echinococcosis is characterized by an asymptomatic incubation period of 5–15 years and the slow development of a primary tumour-like lesion which is usually located in the liver. Clinical signs include weight loss, abdominal pain, general malaise and signs of hepatic failure.
Which of the following is the common name of Echinococcus granulosus?
Echinococcus granulosus is also called the hydatid worm, which a parasite that infects humans and animals. It causes zoonotic disease known as echinococcosis (hydatidosis). Adult worms live in the intestines of dogs that are the definitive host.
What is the morphology of Echinococcus granulosus?
Echinococcus granulosus [this species causes hydatid disease in mammals, including humans] Parasite morphology: Tape-worms form three different developmental stages: eggs; larvae; and adults. Adult E. granulosus worms are small (2-6mm long) and have a scolex with only three attached segments.
What causes Echinococcus granulosus?
CE is caused by cyst-like tapeworm larvae growing in the body. CE usually involves the liver or the lungs, but can also be found in other organs of the body. Because the cysts are slow-growing, infection with CE may not produce any symptoms for many years.
How many species of Echinococcus are there?
Human echinococcosis refers to infection with the larval stages of any of the currently recognized four main species of Echinococcus, namely, E. granulosus, E.
What is Echinococcus granulosus life cycle?
Echinococcus granulosus is a cestode whose life cycle involves dogs and other canids, as definitive hosts for the intestinal tapeworm, as well as domestic and wild ungulates as intermediate hosts for the tissue-invading metacestode (larval) stage (Figure 281-1).
What is the medical importance of Echinococcus granulosus?
Their medical importance lies in the infection of humans by the larval stage of the parasites, predominantly including Echinococcus granulosus, which is the causative agent of cystic echinococcosis (CE) and Echinococcus multilocularis, which causes alveolar echinococcosis (AE).
What parasite has two intermediate hosts?
Like many other parasites, these trematodes have a three host life cycle involving two intermediate hosts and one definitive host. Fluke eggs are introduced into water by means of feces from an infected host. The eggs are consumed by snails, which serve as the first intermediate host.
What is the mode of transmission of Echinococcus granulosus?
Mode of transmission of Echinococcus granulosus
Human infection occurs by hand-to-mouth transfer of viable tapeworm eggs from dog faeces. The parasite eggs, which can remain viable for weeks, are distributed via local environmental contamination by faeces of tapeworm-infected canines.
What is the cysticercosis?
Cysticercosis is a parasitic tissue infection caused by larval cysts of the tapeworm Taenia solium. These larval cysts infect brain, muscle, or other tissue, and are a major cause of adult onset seizures in most low-income countries.
What is the common name for H Nana?
Dwarf tapeworm (Hymenolepis nana, also known as Rodentolepis nana, Vampirolepis nana, Hymenolepis fraterna, and Taenia nana) is a cosmopolitan species though most common in temperate zones, and is one of the most common cestodes (a type of intestinal worm or helminth) infecting humans, especially children.
How is Echinococcus transmitted to humans?
The most common mode of transmission to humans is by the accidental consumption of soil, water, or food that has been contaminated by the fecal matter of an infected dog. Echinococcus eggs that have been deposited in soil can stay viable for up to a year.
What disease does Echinococcus cause?
Hydatid disease (also known as hydatidosis or echinococcosis) is a potentially serious, sometimes fatal, condition caused by cysts containing the larval stages of the Echinococcus granulosus (E. granulosus) tapeworm (Dog Tapeworm).
What is Echinococcus granulosus life cycle?
Echinococcus granulosus is a cestode whose life cycle involves dogs and other canids, as definitive hosts for the intestinal tapeworm, as well as domestic and wild ungulates as intermediate hosts for the tissue-invading metacestode (larval) stage (Figure 281-1).
How can Echinococcus granulosus be prevented?
Prevention measures include limiting the areas where dogs are allowed and preventing animals from consuming meat infected with cysts. Prevent dogs from feeding on the carcasses of infected sheep. Control stray dog populations. Restrict home slaughter of sheep and other livestock.
What is the habitat of Echinococcus granulosus?
granulosus is found in various organs of the intermediate host. It can be found in the lungs, liver, spleen, skeletal muscle, eye, and brain tissues of the various hosts. Intermediate hosts include deer, sheep, moose, reindeer, cattle and humans.
What is the the treatment of Echinococcus granulosus disease?
Chemotherapy, cyst puncture, and PAIR (percutaneous aspiration, injection of chemicals and reaspiration) have been used to replace surgery as effective treatments for cystic echinococcosis. However, surgery remains the most effective treatment to remove the cyst and can lead to a complete cure.
What is Echinococcus antibody?
Echinococcus Antibody (IgG), EIA with Reflex to Western Blot – Echinococcus IgG detection is an important tool for diagnosing hydatid disease, since infected individuals do not exhibit fecal shedding of E. granulosus eggs.
Who is intermediate host for Echinococcus granulosus?
Echinococcus granulosus definitive hosts are wild and domestic canids. Natural intermediate hosts depend on genotype. Intermediate hosts for zoonotic species/genotypes are usually ungulates, including sheep and goats (E. granulosus sensu stricto), cattle (“E.
What is the treatment of hydatid cyst?
Percutaneous drainage with albendazole therapy is a safe and effective alternative treatment for hydatid cysts of the liver. Radical surgery with pre- and post-operative administration of albendazole is the best treatment option for liver hydatid cysts due to low recurrence and complication rates.