A total of 154 of Escherichia coli (E. coli) isolates were isolated from faecal specimens of healthy cattle (n=100). Serotyping of 154 E. coli isolates indicated that 112 (72.72%) isolates were typeable, 28 (18.18%) untypeable and 14 (9.09%) were rough. The most predominant serotype observed was O22 followed by O56, O60, O120 and O1. Antibiogram pattern using a total of 25 different antibiotics indicated that high resistant was present against clindamycin, metronidazole and penicillin followed by cephalothin, neomycin, kanamycin, cephalexin, streptomycin, furazolidone and tetracycline antibiotics. The amplification of tet(A) and tet(B) resistant determinants by PCR resulted in generation of 372bp and 228, respectively. The tet(A) gene was predominant gene compared to tet(B) gene. This study using pheno-genotypic characterization indicated the presence of antimicrobial resistant E. coliisolates amongst healthy cattle, emphasizing that effective strategy should be applied to persist the efficiency along with ideal usage of novel antibiotics though minimizing the risk of antibiotic resistant bacteria. arabic 11 English 82
Abdusalam Sharef Abdusalam Mahmoud(3-2020)

Since 1998, southern Europe has experienced multiple incursions of different serotypes and topotypes of Bluetongue virus, a vector-borne transmitted virus, the causative agent of Bluetongue (BT), a major disease of ruminants. Some of these incursions originated from northern Africa, likely because of wind-blown dissemination of infected midges. In this report, we describe the detection and whole genome characterization of a novel BTV-3 strain identified in a symptomatic sheep in Tunisia. Sequences were immediately deposited with the GenBank Database under Accession Nos KY432369-KY432378. Alert and preparedness are requested to face the next vector seasons in northern Africa and the potential incursion of this novel strain in southern Europe arabic 11 English 57
Abdusalam Sharef Abdusalam Mahmoud(1-2021)

Abstract Background: Epizootic haemorrhagic disease (EHD) is a vector-borne viral disease of domestic and wild ruminants. Epizootic haemorrhagic disease virus (EHDV) is transmitted by Culicoides spp. EHDV is a member of the Orbivirus genus within the Reoviridae family. It shares many morphological and structural characteristics with other members of the genus, such as the bluetongue virus, African horse sickness virus, and equine encephalosis virus. Aims: The purpose of our study was to investigate the epidemiological situation of EHDV in Libya in order to gain some knowledge about the presence of this virus in the country. Methods: In this study, we investigated the seroprevalence of EHDV in Libya, testing 855 blood samples collected during 2015. The samples were collected from domestic ruminants (cattle, sheep, and goats) originating from 11 provinces of Libya. Sera were tested by competitive enzyme-linked immunosorbent assays and positive samples confirmed by serum neutralization test. Results: The overall seroprevalence of EHDV was estimated to be 4% (95% confidence intervals = 2.8%–5.4%). Small ruminant seroprevalence was significantly (p = 0.016) higher than that found in cattle. Neutralizing antibodies against EHDV-6 were detected in a sheep from the western region of Libya. Conclusion: This study suggests that EHDV has circulated or is circulating in Libya, and sheep could play an important role in the epidemiology of EHDV, and the virus may still be circulating in North Africa. Keywords: EHD, EHDV-6, Seroprevalence, Libya.
Abdusalam Sharef Abdusalam Mahmoud(6-2021)