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Aptima Trichomonas vaginalis assay elucidates significant underdiagnosis of trichomoniasis among women in Brazil according to an observational study
Biology Institute, Federal University of Pelotas (UFPel), Pelotas, Brazil.
School of Medicine, Federal University of Pelotas (UFPel), Pelotas, Brazil.
School of Medicine, Federal University of Pelotas (UFPel), Pelotas, Brazil.
School of Medicine, Federal University of Pelotas (UFPel), Pelotas, Brazil.
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2019 (engelsk)Inngår i: Sexually Transmitted Infections, ISSN 1368-4973, E-ISSN 1472-3263, Vol. 95, nr 2, s. 129-132Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

OBJECTIVES: Trichomonas vaginalis (TV) infection is the most common non-viral STI globally and can result in adverse pregnancy outcomes and exacerbated HIV acquisition/transmission. Nucleic acid amplification tests (NAATs) are the most sensitive diagnostic tests, with high specificity, but TV NAATs are rarely used in Brazil. We investigated the TV prevalence and compared the performance of the US Food and Drug Association-cleared Aptima TV assay with microscopy (wet mount and Gram-stained) and culture for TV detection in women in Pelotas, Brazil in an observational study.

METHODS: From August 2015 to December 2016, 499 consecutive asymptomatic and symptomatic sexually active women attending a Gynaecology and Obstetrics Outpatient Clinic were enrolled. Vaginal fluid and swab specimens were collected and wet mount microscopy, Gram-stained microscopy, culture and the Aptima TV assay performed.

RESULTS: The median age of enrolled women was 36.5 years (range: 15-77). The majority were white, had a steady sexual partner and low levels of education. The TV detection rate was 4.2%, 2.4%, 1.2% and 0% using the Aptima TV assay, culture, wet mount microscopy and Gram-stained microscopy, respectively. The sensitivity of culture and wet mount microscopy was only 57.1% (95% CI 36.5 to 75.5) and 28.6% (95% CI 13.8 to 50.0), respectively.

CONCLUSIONS: was found among women in Pelotas, Brazil and the routine diagnostic test (wet mount microscopy) and culture had low sensitivities. More sensitive diagnostic tests (NAATs) and enhanced testing of symptomatic and asymptomatic at-risk women are crucial to mitigate the transmission of TV infection, TV-associated sequelae and enhanced HIV acquisition and transmission.

sted, utgiver, år, opplag, sider
BMJ Publishing Group Ltd, 2019. Vol. 95, nr 2, s. 129-132
Emneord [en]
Aptima, Brazil, culture, nucleic acid amplification test (NAAT), trichomonas infection, trichomonas vaginalis, wet mount microscopy
HSV kategori
Identifikatorer
URN: urn:nbn:se:oru:diva-68678DOI: 10.1136/sextrans-2018-053635ISI: 000471868700012PubMedID: 30154157Scopus ID: 2-s2.0-85052888876OAI: oai:DiVA.org:oru-68678DiVA, id: diva2:1244589
Merknad

Funding Agencies:

Programa de Apoio a Pos-Graduacao (PROAP)  

Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES), Brasilia, DF, Brazil  

Örebro County Council Research Committee  

Foundation for Medical Research at Örebro University Hospital, Örebro, Sweden 

Tilgjengelig fra: 2018-09-03 Laget: 2018-09-03 Sist oppdatert: 2019-11-08bibliografisk kontrollert

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