Diagnosis Of Opportunistic Infections- Parasites
It is a protozoa infecting the lungs. It is acquired through inhalation. It causes atypical pneumonia that kills rapidly. Specimen need include lung biopsy.
It is an intestinal coccidium of cats. Cats pass sporozoites in faeces. The sporozites penetrates the stomach and enters the vascular system, then circulate and settle in the brain. In fetus, it causes congenital problems. In immune-compromised patients, it multiplies in brain.
i. Dye test
Use patient serum plus live tachyzoites (parasite). The antibody will immobolise the parasites.
ii. Serology (IFAT)
Use dead tachyzoites. You need to use U.V microscope.
iv. Haemagglutination technique
The nodes are always enlarged. Do a smear on the slide and look for brandyzoites.
Is a coccidium, infect small intestine. It blocks the Absorption mechanism. Patient suffer from prolong diarrhea.
i. Do a modified ZN stain on stool specimen. They are acid fast
ii. Do intestinal biopsy.
Is a helminthes. It exists in two forms:-
Intestinal parasites that cause:-
- Diarrhoea and bulky oil smelling stool with a lot of fat.
- Malabsorption syndrome in children and immune suppression in patients.
Look for cysts and trophozoites in stool.
It is a cattle protozoa that lives in blood of cattles. It cause severe haemolytic anaemia in patient whose spleen has been removed