Malaria screening

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Screening of malaria is important in Sub-Saharan refugees and blood donors.

Screening

Screening for malaria infection is important in:[1]

  • Sub-Saharan refugees
    • A sub-optimal alternative to presumptive therapy is to test newly arriving for malaria infection.
    • Studies have demonstrated that a single malaria thick-and-thin blood smear lacks sensitivity for detecting asymptomatic or sub-clinical malaria in these populations.
    • Three separate blood films taken at 12 to 24 hour intervals, the standard recommendation for diagnosis of clinical malaria, has a greater sensitivity. However, this approach is rarely feasible for screening newly arriving refugee populations because of cost constraints and the need for multiple visits.
    • When a refugee does not receive presumptive therapy they should be monitored for signs or symptoms of disease, particularly during the initial 3 months after arrival, regardless of the post-arrival testing results.

References

  1. "Immigrant and Refugee Health".
  2. Lee SH, Kara UA, Koay E, Lee MA, Lam S, Teo D (2002). "New strategies for the diagnosis and screening of malaria". Int J Hematol. 76 Suppl 1: 291–3. PMID 12430867.

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