ORGANISM 4: Mansonella ozzardi
GENERAL CHARACTERISTICS
COMMON NAME: None.
GEOGRAPHICAL DISTRIBUTION: Central and South America.
PATHOGENESIS: Usually asymptomatic, mild discomfort with eosinophilia and
articular pain.
HABITAT: Mesenteries and fatty tissue of the body cavities.
VECTOR: Culicoides species.
RESERVOIR HOST: None.
INFECTIVE FORM: Filariform larva.
MODE OF INFECTION: Inoculation.
PERIODICITY: None.
SPECIMEN OF CHOICE: Blood.
SPECIMEN PROCESSING: Giemsa's or Hematoxylin/Eosin stains.
MICROFILARIA
SIZE: 173 to 240 mcm.
SHEATH: Absent.
TAIL: Blunt.
TERMINAL NUCLEI: Do not extend to the tip of the tail.
Figure 4-33. Life cycle of Mansonella ozzardi. (continued)
MD0842
4-41
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