Detection of Plasmodium Infection by the illumigene Malaria Assay Compared to Reference Microscopy and Real-Time PCR.

Abstract:

:Malaria is one of the leading causes of infectious disease in travelers returning from the tropics. The diagnosis of malaria is typically performed by examining Giemsa-stained thick and thin peripheral blood smears, which is time consuming, labor intensive, and requires high levels of proficiency. Alternatively, loop-mediated isothermal amplification (LAMP) is a new molecular method, which is rapid, sensitive, and requires less capital equipment and technological training. We conducted a retrospective study comparing two formats of a commercial LAMP assay (Meridian illumigene malaria [M] and malaria Plus [MP]) versus reference microscopy on archived blood specimens (n = 140) obtained from unique returning travelers suspected of having malaria. Discrepant results were resolved by either repeat testing or a laboratory developed ultrasensitive real-time PCR method. On initial testing, the Meridian illumigene M and MP kits had sensitivities of 97.3% (95% confidence interval [CI], 90.7 to 99.7%) and 100.0% (95.1 to 100.0%) and specificities of 93.8% (84.8 to 98.3%) and 91.5% (81.3 to 97.2%), respectively, versus reference microscopy. We project a significant cost reduction in low prevalence settings where malaria is not endemic with LAMP-based malaria screening given the excellent negative predictive value achieved with LAMP.

journal_name

J Clin Microbiol

authors

Rypien C,Chow B,Chan WW,Church DL,Pillai DR

doi

10.1128/JCM.00806-17

subject

Has Abstract

pub_date

2017-10-01 00:00:00

pages

3037-3045

issue

10

eissn

0095-1137

issn

1098-660X

pii

JCM.00806-17

journal_volume

55

pub_type

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