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Abstract

Background

Rapid diagnostic tests are commonly used by hospital laboratories in England to detect rotavirus (RV), and results are used to inform clinical management and support national surveillance of the infant rotavirus immunisation programme since 2013. In 2017, the Public Health England (PHE) national reference laboratory for enteric viruses observed that the presence of RV could not be confirmed by PCR in a proportion of RV-positive samples referred for confirmatory detection.

Aim

We aimed to compare the positivity rate of detection methods used by hospital laboratories with the PHE confirmatory test rate.

Methods

Rotavirus specimens testing positive at local hospital laboratories were re-tested at the PHE national reference laboratory using a PCR test. Confirmatory results were compared to original results from the PHE laboratory information management system.

Results

Hospital laboratories screened 70.1% (2,608/3,721) of RV samples using immunochromatographic assay (IC) or rapid tests, 15.5% (578/3,721) using enzyme immunoassays (EIA) and 14.4% (535/3,721) using PCR. Overall, 1,011/3,721 (27.2%) locally RV-positive samples referred to PHE in 2016 and 2017 failed RV detection using the PHE reference laboratory PCR test. Confirmation rates were 66.9% (1,746/2,608) for the IC tests, 87.4% (505/578) for the EIA and 86.4% (465/535) for the PCR assays. Seasonal confirmation rate discrepancies were also evident for IC tests.

Conclusions

This report highlights high false positive rates with the most commonly used RV screening tests and emphasises the importance of implementing verified confirmatory tests for RV detections. This has implications for clinical diagnosis and national surveillance.

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2020-10-29
2024-11-21
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Retrospective analysis on confirmation rates for referred positive rotavirus samples in England, 2016 to 2017: implications for diagnosis and surveillance
<p class="citation"> <span>Citation style for this article:</span> <span class="meta-value authors"> <a href="/search?value1=Cristina+C+Celma&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Celma Cristina C</a>, <a href="/search?value1=Stuart+Beard&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Beard Stuart</a>, <a href="/search?value1=Amy+Douglas&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Douglas Amy</a>, <a href="/search?value1=Shan+Wong&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Wong Shan</a>, <a href="/search?value1=Nana-Kwame+Osafo&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Osafo Nana-Kwame</a>, <a href="/search?value1=Matthew+Hannah&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Hannah Matthew</a>, <a href="/search?value1=Ashleigh+Hale&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Hale Ashleigh</a>, <a href="/search?value1=Gabrielle+Huggins&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Huggins Gabrielle</a>, <a href="/search?value1=Shamez+Ladhani&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Ladhani Shamez</a>, <a href="/search?value1=Jake+Dunning&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Dunning Jake</a></span>. Retrospective analysis on confirmation rates for referred positive rotavirus samples in England, 2016 to 2017: implications for diagnosis and surveillance. <a href="/content/ecdc">Euro Surveill.</a> 2020;25(43):pii=1900375. <a href="https://doi.org/10.2807/1560-7917.ES.2020.25.43.1900375" title="doi link" target="_blank">https://doi.org/10.2807/1560-7917.ES.2020.25.43.1900375</a> <span class="ES_Article_citation"> <span class="generated">Received</span>: 10 Jun 2019;&nbsp;&nbsp; <span class="generated">Accepted</span>: 01 Mar 2020 </span> </p>
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