Comparison of Three Diagnostic Techniques for Detection of Rotavirus and Coronavirus in Calf Faeces in Australia
Overview
Affiliations
Objective: Compare real-time reverse transcription polymerase chain reaction (qRT-PCR), a commercially available enzyme-linked immunosorbent assay (ELISA) and lateral flow immunochromatography assay (LAT) for the detection of rotavirus and coronavirus in faecal samples collected from diarrhoeic calves.
Design: Prospective survey.
Method: Samples were tested at two separate facilities using a commercial ELISA and an in-house qRT-PCR. Simple logistic regression was performed to examine the relationship between the two tests. A subset of samples was screened using qRT-PCR, ELISA and a commercial LAT dipstick (132 faecal samples were tested for coronavirus and 122 samples for rotavirus).
Results: Of the 586 samples tested, 131 (22.39%) and 468 (79.86%) were positive for coronavirus and group A rotavirus, respectively, using qRT-PCR. The number of samples positive on ELISA for coronavirus and rotavirus was 73 (12.46%) and 225 (38.40%), respectively. Using LAT, 30 (22.73%) and 43 (35.35%) samples were positive for coronavirus and rotavirus, respectively. Simple linear regression revealed a statistically significant (P < 0.05) but weak (r(2) =-0.07 and -0.40) correlation between the rotavirus/coronavirus qRT-PCR and ELISA, respectively. There was also poor agreement between the LAT and qRT-PCR assays.
Conclusion: The sensitivity and specificity of the commercial ELISA and LAT assays evaluated in this study were low compared with qRT-PCR. The low positive and negative predictive values of the assays suggests that they were of limited diagnostic benefit in the population sampled.
Isolation and identification of BRV G6P[1] strain in Heilongjiang province, Northeast China.
Li C, Wang X, Zhu Q, Sun D Front Vet Sci. 2024; 11:1416465.
PMID: 39372897 PMC: 11449731. DOI: 10.3389/fvets.2024.1416465.
Detection and molecular characterization of major enteric pathogens in calves in central Ethiopia.
Bergholm J, Tessema T, Blomstrom A, Berg M BMC Vet Res. 2024; 20(1):389.
PMID: 39227796 PMC: 11373192. DOI: 10.1186/s12917-024-04258-7.
Advances in Laboratory Diagnosis of Coronavirus Infections in Cattle.
van den Hurk S, Regmi G, Naikare H, Velayudhan B Pathogens. 2024; 13(7).
PMID: 39057751 PMC: 11279749. DOI: 10.3390/pathogens13070524.
Medina J, Castaneda S, Camargo M, Garcia-Corredor D, Munoz M, Ramirez J Vet Res Commun. 2024; 48(4):2029-2049.
PMID: 38865041 DOI: 10.1007/s11259-024-10403-2.
Enayati S, Ranjbar M, Hooshmandi S, Ahangarzadeh S, Aboutalebian S Adv Biomed Res. 2023; 12:224.
PMID: 38073754 PMC: 10699243. DOI: 10.4103/abr.abr_422_22.