Table 2

In-house and commercially available molecular methods for RVFV detection in human samples

In-house nucleic acid test (NAT) methods for RVFV detection
MethodPublicationTarget geneDescription
Real-time PCR (RT-PCR)Bird et al 30 (2007)LTwo-step assay for high-throughput detection of 40 known strains.
RT-PCRBusquets et al. (2010) 54 LOne-step real-time TaqMan assay.
RT-PCRDrolet et al. (2012) 24 LCan be performed in BSL-2 as it involves pathogen deactivation step.
qRT-PCRDrosten et al. (2002) 31 MPart of a panel for differential diagnosis of six viral haemorrhagic fever pathogens.
RT-PCRGarcia et al. (2001) 55 NSsTwo-step real-time TaqМan.
RT-PCRLiu et al. (2016) 56  LDeveloped as a TaqМan assay card for 26 pathogens. Suitable for outbreak investigation or surveillance.
RT-PCRMwaengo et al.(2012)57 L, STwo-step real-time assay used for RVFV detection in mosquitos.
Nested
RT-PCR
Sall et al.(2002) 58 NSsQualitative. Used for 293 human and animal sera sampled during an RVF outbreak in Mauritania in 1998.
Nested
RT-PCR
Sanchez-Seco et al.(2003) 59 S, LNested PCR assay, qualitative. Uses degenerate primers in first round of PCR to capture all Phleboviruses.
RT-PCRWeidmann et al.(2008) 60 SOne-step assay, designed against 19 strains.
RT-PCRWilson et al.(2013) 61 L,M, NSsMultiplex RT-PCR which detects 3 segments: L and M segments as confirmatory targets, and NSs to differentiate between infection and vaccination (suitable for DIVA testing).
Commercially available NAT methods for RVFV detection
MethodManufacturerApproval
RealStar RVFV RT-PCRAltonaCE
RVFV LightMix Modular AssaysTIB MolBiolRUO
RVFV RT-PCR reagentLifeRiverCE
FTD RVFVFast-Track DiagnosticsRUO
RVFV RT-PCR kit; EBOV+RVFV and EBOV+RVFV+ YFV PCR kitsGenekam Biotech AgRUO
RVFVPCRMaxRUO
QPCR Kit, RNA, RVFVTechne/Cole PalmerRUO
  • BSL3, biosafety level 3; CE, approved for clinical testing; DIVA, distinguish infected from vaccinated individuals; EBOV, Ebola virus; FTD, Fast-Track Diagnostics; qPCR, quantitative PCR; RUO, approved for research use only; RVFV, rift valley fever virus; YFV, yellow fever virus.