[Elizabeth_Zeibig]_Clinical_Parasitology__A_Practi(z-lib.org)

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CHAPTER 9 The Filariae
C H A P T E R
9
The Filariae
Teresa A. Taff and Elizabeth Zeibig
W H A T ’ S A H E A D
Focusing In
Morphology and Life Cycle
Notes
Laboratory Diagnosis
Pathogenesis and Clinical
Symptoms
Filariae Classification
Wuchereria bancrofti
Brugia malayi
Loa loa
Onchocerca volvulus
Other Filarial Organisms
Mansonella ozzardi
Mansonella perstans
Looking Back
L E A R N I N G O B J E C T I V E S
On completion of this chapter and review of
its diagrams, tables, and corresponding
photomicrographs, the successful learner will
be able to:
9-1. Define the following key terms:
Calabar swelling
Diurnal
Elephantiasis
Filaria (pl., filariae)
Filarial
Microfilaria (pl., microfilariae)
Nematode (pl., nematodes)
Nocturnal
Occult
Periodicity
Sheath
Subperiodic
Vector (pl., vectors)
9-2. State the geographic distribution of
the filariae.
9-3. State the common name associated with
each of the filariae.
9-4. Given a list of parasites, select those
belonging to the filariae.
9-5. Briefly describe the life cycle of each of
the filaria.
9-6. List the vectors responsible for filarial
transmission.
9-7. Identify and describe the populations prone
to contracting symptoms and clinically
significant disease processes associated with
each pathogenic filarial.
9-8. Select the specimen of choice, collection
and processing protocol, and laboratory
diagnostic technique(s) for the recovery of
each of the filarial parasites.
9-9. Identify and describe each of the following
as they relate to the filariae:
A. Disease or condition, prognosis
B. Treatment options
C. Prevention and control measures
9-10. Explain the significance of collection time
as it relates to successful filarial organism
recovery.
9-11. Given a description, photomicrograph
and/or diagram of a filarial parasite:
A. Correctly label the designated
characteristic structure(s).
B. State the purpose of designated
characteristic structure(s).
C. Identify the organism by scientific name,
common name, and morphologic form.
222 Copyright © 2013 by Saunders, an imprint of Elsevier Inc.