Unexpected false-negative result in a traveller’s malaria diagnosis

Author:

Perez-Ugarte Arantxa1,Rubio Maturana Carles23ORCID,Silgado Aroa145,Zarzuela Serrat Francesc1,Goterris Lidia1,Paredes-Carmona Fernando6,Sulleiro Elena145

Affiliation:

1. Microbiology Department, Vall d’Hebron University Hospital, PROSICS Barcelona, Universitat Autònoma de Barcelona , Barcelona 08035 , España

2. Microbiology Department , Vall d’Hebron Research Institute (VHIR), , Barcelona 08035 , España

3. Universitat Autònoma de Barcelona , Vall d’Hebron Research Institute (VHIR), , Barcelona 08035 , España

4. CIBERINFEC , ISCIII- CIBER Infectious Diseases, , Madrid , Spain

5. Instituto de Salud Carlos III , ISCIII- CIBER Infectious Diseases, , Madrid , Spain

6. Department of Paediatrics, Arnau de Vilanova University Hospital , Lleida 25198 , Spain

Abstract

A 4-year-old traveller returned from Senegal with symptoms compatible with malaria. Plasmodium falciparum HRP-2 antigen detection was negative, whereas panmalarial aldolase was positive. Microscopy confirmed the presence of P. falciparum trophozoites with parasitaemia of 16%. Discarding other causes of false-negative antigen detection, this is a rare case of prozone effect.

Publisher

Oxford University Press (OUP)

Subject

General Medicine

Reference5 articles.

1. A multiplex qPCR approach for detection of pfhrp2 and pfhrp3 gene deletions in multiple strain infections of Plasmodium falciparum;Schindler;Nat Res Sci Rep,2019

2. Assessment of the prozone effect in malaria rapid diagnostic tests;Gillet;Malar J,2009

3. Failure of rapid diagnostic tests in Plasmodium falciparum malaria cases among travelers to the UK and Ireland: identification and characterisation of the parasites;Nolder;Int J Infect Dis,2021

4. Prozone in malaria rapid diagnostics tests: how many cases are missed?;Gillet;Malar J,2011

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