AI Article Synopsis
- Noroviruses (NoVs) cause diarrhoeal outbreaks, especially in places like hospitals and nursing homes; genogroup II is most commonly associated with these outbreaks.
- The study tested Loopamp kits for detecting NoV GI and GII in faecal samples, comparing their effectiveness to the gold standard, real-time RT-PCR.
- Results showed that while the Loopamp kits were effective, they were slightly less sensitive for GI strains (83.3%) compared to GII strains (97.4%), but this difference is not significant since GII strains are more prevalent in outbreaks.
Article Abstract
Background: Noroviruses (NoVs) are associated with outbreaks of diarrhoeal illness in hospitals, nursing and residential homes and other institutional settings. NoV strains exhibit wide genetic diversity, and different virus genogroups and genotypes co-circulate in any geographical region at the same time, although most outbreaks of gastroenteritis are predominantly associated with genogroup II. The reverse transcription-polymerase chain reaction (RT-PCR) is the gold standard for detecting NoVs in clinical samples.
Objectives: This study evaluates commercialised Loopamp kits for detecting NoV GI and NoV GII in faecal samples collected from patients with gastroenteritis and compares the results with those obtained using real-time RT-PCR with NoV genogroup sequence-specific detection.
Study Design: Five hundred and ten faecal samples collected from patients with gastroenteritis were evaluated for the presence of NoV using the gold-standard real-time RT-PCRs and the Loopamp assays.
Results: The Loopamp Norovirus GI and GII detection kits performed well compared to genogroup-specific real-time RT-PCR. Although the sensitivity of detection of GI strains (83.3%) was less than that for GII strains (97.4%), this will have little impact on the laboratory diagnosis of NoV, since GII strains are associated with the majority of outbreaks examined.
Conclusions: The Loopamp GII detection kit is a sensitive method for detecting all the commonly circulating GII-4 strains included in the evaluation panel.
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| http://dx.doi.org/10.1016/j.jcv.2008.02.012 | DOI Listing |
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