Page 247 - parasitology for medical and clinical laboratoryprofessionals

CHAPTER

11

Organisms Borne by Ticks

and Other Vectors

LEARNING OBJECTIVES

Upon completion of this chapter, the learner will be expected to:

■ Explain the dual role of ticks as vectors and as parasites of warm-blooded mammals
■ Discuss the ways in which ticks are equipped to find hosts
■ Explain how the population of deer ticks is controlled by the white-tailed deer population
■ List steps one can take to avoid being bitten by a tick
■ Relate the ways ticks are attracted to their victims
■ Describe how DEET and similar insect repellents keep biting insects away
■ Define the localized symptoms and signs of Lyme disease
■ Describe in general the three stages of Lyme disease
■ List some medical conditions of a victim that may cause serious threats to their health when
babesiosis is contracted

KEY TERMS

Acetone Ehrlichiosis Macrophages
Anaplasma Erythema chronicum migrans Malaise
Bioterrorism Glandular Mandibles
Black flies Human granulocytic ehrlichiosis Methylene blue stain
Bull’s eye rash (HGE) Mononucleosis
Chelicerae Hypostome Neutrophil
Chloramphenicol Insect repellent Nymphal ticks
Conjunctivitis Intracellular Oculoglandular
Deer flies Jaundice Ohara’s fever
Deer fly fever Leukopenia Permethrin
Deer tick Lone star tick Rodents
DEET Lymphocyte Scutum

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