Elisa And Mat Tests For Leptospira Interogans Detection From Cattle In Eastern Algeria
Abstract
Leptospira interrogans is one of the most common infectious organisms worldwide that causes several
losses in cattle. As far as we know, few previous studies have focused on Leptospira interrogans infection in cattle
from Algeria. This study aimed to assess the prevalence of bovine leptospirosis, identify selected risk factors, and
compare two different detection tests. 611 blood samples from 67 cattle farms were collected in six Algerian provinces;
Algiers, Boumerdès, Bordj Bou Arreridj, Sétif, Batna, and Souk Ahres. Sera samples were analyzed for the presence of
antibodies against five serovars of Leptospira interrogans using a microscopic agglutination test (MAT), using 50% agglutination,
at a dilution ≥1: 100 as a cut-off point. A commercial indirect enzyme-linked immunosorbent assay (ELISA)
test was used to determine the seroprevalence against L. interrogans serovar Hardjo. Moreover, a survey through
breeders’ questionnaires was conducted to identify the potential risk factors of Leptospira interrogans infection. The
seroprevalence of L. interrogans infection using MAT in the cows was 17.02% (95% confidence interval [CI]: 14.12-
20.24) and in the farms was 83.58% (95% CI: 59.31-81.99). The most commonly detected serovar was Hardjo 6.71%
(95% CI: 4.86-8.99) followed by Icterohaemorrhagiae 5.07% (95% CI: 3.47-7.12). Finally, the last serovar present was
the Grippotyphosa 2.78 (95% CI: 1.63-4.42). The comparison between the two serological methods, considering the
MAT as the reference test, shows that the PrioCHeck ELISA kit had a sensitivity of 63.4% (95% CI: 48.7-78.2), a specificity
of 98.9% (95% CI: 98.1-99.8), and a reliability of 96.6% (95% CI: 95.1-98.0). The kappa coefficient was 0.62,
and the McNemar test showed a P = 0.23. Multivariable logistic regression analysis showed that the semi-intensive
system was a protective factor against leptospirosis, with an odds ratio of 0.35 (95% CI: 0.16-0.78). The study findings
indicate that leptospirosis is a serious issue in farms located in selected provinces in Algeria, with a high incidence rate
noted there. The semi-intensive system’s significance as a leptospirosis protective factor is to create control strategies
that decrease the probability of infection in both humans and cattle.
Article Details
- Come citare
-
Benammar, L., Benseghir, H., Hezil, D., Bouchemla, F., Zaidi, S., Bessas, A., & Ghalmi, F. (2025). Elisa And Mat Tests For Leptospira Interogans Detection From Cattle In Eastern Algeria. Journal of the Hellenic Veterinary Medical Society, 76(1), 8905–8916. https://doi.org/10.12681/jhvms.38367
- Fascicolo
- V. 76 N. 1 (2025)
- Sezione
- Research Articles

Questo lavoro è fornito con la licenza Creative Commons Attribuzione - Non commerciale 4.0 Internazionale.
Authors who publish with this journal agree to the following terms:
· Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution Non-Commercial License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
· Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g. post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
· Authors are permitted and encouraged to post their work online (preferably in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.