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Babesia microti

Babesia microti. Presented By: Hannah Wilder & Nicole Johnson. *Background*. Babesia microti is a parasite of rodents (especially the white-footed mouse). Different species of Babesia cause babesiosis in humans, including Babesia microti & Babesia divergens, primarily .

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Babesia microti

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  1. Babesia microti Presented By: Hannah Wilder & Nicole Johnson

  2. *Background* • Babesia microti is a parasite of rodents (especially the white-footed mouse). Different species of Babesia cause babesiosis in humans, including Babesia microti & Babesia divergens, primarily. • Babesia microti lives and reproduces within RBCs.

  3. Parasite inside of Erythrocytes. Trophozoite looks like a diamond ring (top)

  4. *Geographic Range* • Worldwide, Especially in: • Europe (although, mostly Babesia divergens) • Asia • United States • Particularly in the Northeast: Especially New England, New York & other coastal regions • Has been spotted in other parts of the U.S., such as the mid-west

  5. *Definitive Host* • A tick is the definitive host. • Transmission occurs from an animal to a human, normally using the northern deer tick or black-legged tick (Ixodes scapularis) as the vector. • Also may be spread through blood transfusions

  6. Female Ixodes Scapularis tick

  7. *Life Cycle* • Involves two hosts, a human and a rodent

  8. *Prevention* • Skin checks for ticks after being in wooded areas • Check animals for ticks • Wear long clothing • Find a good tick repellant

  9. Chills Headache Fatigue High Fever Loss of Appetite Muscle Aches Nausea Renal Failure *Worse in immuno-compromised individuals Similar to Malaria! *Pathogenesis/Clinical Symptoms*

  10. *Diagnosis/Treatment* • Blood smear and viewing Babesia microti in the RBCs • Combination of Quinine and Clindamycin • Blood transfusions to reduce the number of infected RBCs • Patients who are healthy normally make a full recovery

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