P Flashcards
(39 cards)
Parasite is a
organism that lives on or in another organism at the expense of this host
Three types of parasites
protozoa helminths and arthropods
transmission of protozoa that live in the intestine
fecal-oral route
protozoa that live in the blood or tissue or humans transmission mode is
arthropod vector (malaria)
Malaria symptoms
fever,chills flu like symptoms. if untreated severe complications and death
Malaria parasite
Plasmodium species, mainly plasmodium falciparum
malaria vector
anopheles mosquito
diagnosis of malaria
blood films
Malaria life cycle
sporozoites injected under skin, travel through blood and enter liver, mature in lier and re-enter circulation as merozoites, invade red cells and lyse cells, sexual forms taken up by mosquitos
Malaria control
Insecticide treated nets, prophylaxis, Vaccine reserch
Amoebic Dysentery is a
Protozoal infection
Amoebic Dysentry is caused by
Entamoeba histolytica
Amoebic dysentery causes
diarrhoea with blood or pus. intestinal and extra intestinal infections. liver abscess in late disease
Diagnosis of amoebic dysentry
Hot stool sample-pseudopodia, cysts can be seen in the stool with microscope
Amebic liver abscess characteristic
reddish brown pus
Protozoa 3 Leishmaniasis infection is caused by
sandfly bites
Cutaneous Leishmaniasis
skin or mucous ulceration
visceral leishmaniasis
fever, weight loss and hepatic-splenomegaly
Leishmaniasis diagnosis
histology of biopsy material
Three types of helminths
Nematodes(round worms) Cestodes (tapeworms) and trematodes (flat worms)
Enterobiasis
Threadworm, sellotape test, ova seen on microscopy
Ascaris lumbricoides is a
nematode
\ascaris lumbricoides lifecycle
ingested eggs hatch in intestine, large carried by the circulation to the lungs, swallowed again and adult worms develop in and inhabit small intestine
ascaris lumbricoides symptoms
often asymptomatic, transient pulmonary symptoms, mass of worms may obstruct small intestine or bile duct