Blood and tissue nematodes II Flashcards
Mansonella Ozzardi, Mansonella Perstans, Trichinella Spiralis, Dracunculus Medenensis, Angiostrongylus Cantonensis
Common name of Mansonella Ozzardi
New world filaria
Transferred by the injection of infective larvae to the human definitive host.
Mansonella Ozzardi
It is found in the blood as well as in the capillaries and intravascular spaces of skin.
Microfilaria
The emerging adults may take up residence in the body cavities, visceral fat and mesenteries.
Mansonella Ozzardi
Found exclusively in western hemisphere.
Mansonella Ozzardi
Known to exist in North, central, and south america, as well as part of west indies and carribean.
Mansonella Ozzardi
The parasite may be transmitted by culicoides midges or simulium blackfly.
Mansonella Ozzardi
Asymptomatic infections are common, symptoms such as urticaria, lymphadenitis, skin itching, and arthralgias may occur.
Mansonella Ozzardi
Common name of Mansonella Perstans
Perstans Filaria
Its life is similar to M. ozzardi
Mansonella Perstans
The only vector of Mansonella Perstans
Culicoides sucking midges
Primary definitive host in the life cycle of Mansonella Perstans.
Humans
The incubation period of this organism once inside the host is unknown.
Mansonella Perstans
Infection rates are high in areas endemic to the culicoides sucking midges.
Mansonella Perstans
They are thought to harbor M. perstans or a closely related species as reservoir hosts.
Primates
Adult ____ worms usually appear singly.
M. perstans
Minor allergic reactions or no symptoms at all, are experienced by the infected individuals.
Mansonella Perstans
These individuals may exhibit moderate eosinophilia.
Mansonella Perstans
Responsible for joint and bone pain, as well as enlargement and associated pain in the liver.
Mansonella Perstans
Disease associated in Trichinella Spiralis
Trichinosis, Trichinellosis
It is found worldwide, particularly in members of the meat-eating population.
T. spiralis
It is known as the great imitator.
Trichinella Spiralis
Common name of Dracunculus Medenensis
Guinea worm
Fiery serpent of the Israelites
Medina worm
Dragon worm
Disease associated in Dracunculus Medenensis
Dracunculosis
Dracunculiasis
Guinea worm infection
It is found in parts of Africa, India, Asia, Pakistan, and the Middle East.
Guinea worm
Copepods reside in fresh water, located particularly in areas called step wells, from which people obtain drinking water and bathe.
Dracunculus Medenensis
Copepods reside in fresh water, located particularly in areas called?
step wells
Larvae escape from the ulcers of infected persons who come into contact with this water
First-stage D. medenensis
Ponds, human-made water holes, and
standing water may also serve as sources of infection.
Dracunculus Medenensis
There are a number of known reservoir hosts, including dogs.
Dracunculus Medenensis
Allergic reactions: as migration of the organism occurs
Dracunculus Medenensis
Secondary bacterial infections: may cause disability or even death.
Dracunculus Medenensis
as migration of the organism occurs.
Allergic reactions
May cause disability or even death.
Secondary bacterial infections
Gravid female settles into the subcutaneous tissues and lays her larvae.
painful ulcer
Unsuccessful attempts to remove an entire adult female worm may result in a partial worm being left at the site and subsequent toxic reactions in the ulcer.
Dracunculus Medenensis
Additional allergic reactions and nodule formation may develop on the death and calcification of an adult worm.
Dracunculus Medenensis
Common name of Angiostrongylus Cantonensis
Angiostrogylosis, Angystronggyliasis
Intermediate host of Angiostrongylus Cantonensis
slugs and snails
First reported by Nomura and Lin from Taiwan.
Angiostrongylus Cantonensis
Nishimura and Yogore in the Philippines.
Angiostrongylus Cantonensis
Clinical symptoms — stiffness of the neck, weakness of the muscles, abdominal pain, nausea, vomiting, peripheral eosinophilia, facial paralysis and low grade fever.
Angiostrongylus Cantonensis
CSF contain 100-2000 leukocytes per μ
Angiostrongylus Cantonensis
Charcot-Layden crystals in the meninges
Angiostrongylus Cantonensis
(giant african snail)
Achatina fulica
Bentonite flocculation test.
Trichinella spiralis
