Dataset Information

Molecular characterization and phylogenetic analysis of orf virus isolated from goats in Sokoto metropolis, Nigeria.

ABSTRACT:

Aim

The aim of this study was to molecularly characterize orf virus isolated from clinical infections in goats in Sokoto metropolis.

Materials & methods

Embryonated chicken eggs were used to isolate orf virus according to the established protocol. Viral DNA was extracted and full coding region of B2L gene was amplified by polymerase chain reaction, sequenced and blasted for identification and phylogenetically analyzed.

Results and discussion

The B2L gene sequences of the isolate showed slight variability (96-98.7%) with the reference sequences as it clustered within the same clade with Korean, Zambian and Ethiopian strains, signifying a close genetic relationship. Unique amino acid substitutions were noted. This is the first genetic characterization of B2L gene of orf virus circulating in Nigeria.

Conclusion

This study has provided in sight into the genetic diversity of orf virus in the study area.

SUBMITTER: Lawal N

PROVIDER: S-EPMC8147748 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Publications

Molecular characterization and phylogenetic analysis of orf virus isolated from goats in Sokoto metropolis, Nigeria.

Lawal Nafi'u N Ibrahim Mubarak M Onawala Dauda Ayomide DA Bello Muhammad Bashir MB Aliyu Rabiu Muhammad RM Baraya Yusha'u Shu'aibu YS Aliyu Abdullahi A Ibrahim Aliyu Musawa AM Sa'adu Aliyu A

Future science OA 20210420 6

<h4>Aim</h4>The aim of this study was to molecularly characterize orf virus isolated from clinical infections in goats in Sokoto metropolis.<h4>Materials & methods</h4>Embryonated chicken eggs were used to isolate orf virus according to the established protocol. Viral DNA was extracted and full coding region of <i>B2L</i> gene was amplified by polymerase chain reaction, sequenced and blasted for identification and phylogenetically analyzed.<h4>Results and discussion</h4>The <i>B2L</i> gene seque ...[more]

PMID: 34046202

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Project description:BackgroundOrf is a highly contagious viral skin disease in sheep and goats caused by Orf virus (ORFV) in the genus Parapoxvirus. Although sheep and goats are considered an essential food resource, particularly in Africa, ORFV infection represents an increasing challenge to animal productivity causing high economic losses.AimThis study aimed to detect and characterize the ORFV in suspected clinically diseased goats in two neighboring Egyptian governorates, Al-Sharkia and Ismailia, flocks during April 2020 and July 2021by using PCR and phylogenetic analysis of partial B2L sequence.he present study indicate the necessity for establishing normal heart values in conscious and anaesthetized individuals.MethodsKids from two Egyptian governorates showed the clinical picture of ORFV infection. Samples were collected (n = 15) from two different flocks during April 2020 and July 2021. PCR was carried out to detect the ORFV by targeting a highly conserved sequence within ORFV (B2L) gene. To determine the phylogenetic relationship with other ORFV strains, sequencing and phylogenetic analysis were performed.ResultsORFV infection was confirmed in 12 samples of oral scabs (80%) by PCR targeting a highly conserved sequence within B2L gene. Sequencing of DNA products was performed and obtained sequences revealed 100% identity at the nucleotide level. Two ORFVs, one from each outbreak showed 98.2% nucleotide identity with a previous Egyptian ORFV (KP984529) whereas our isolates showed higher nucleotide identities, 99.1% and 98.7% with ORFV strains from neighboring countries, Sudan and Ethiopia, respectively. The phylogenetic tree grouped isolates into two main clusters, cluster I included isolates of this study and foreign ones mainly from China, India, and Sudan. Interestingly, the vaccine strains of ORF used in different countries were grouped in cluster II with previous Egyptian isolate (KP984529), Ethiopian and Israeli ORFV isolates.ConclusionMolecular characterization of B2L gene of ORFV isolates revealed higher sequence identities and more close genetic relationships with other ORFV strains circulating in neighboring countries than with the Egyptian isolates. These findings provide an insight into the genetic diversity of field ORFV isolates circulating in goats in the Egyptian governorates.

Project description:BACKGROUND:Presumptive diagnosis and prescription of anti-malarial medicines to malaria rapid diagnostic test (RDT)-negative patients is a common practice among health care workers (HCWs) in Nigeria. There is paucity of data on HCWs adherence to RDT result in Sokoto metropolis, Nigeria. The study was conducted to determine HCWs adherence to malaria test result and the influencing factors. METHODS:A cross-sectional study was conducted among 262 HCWs selected by multistage sampling technique from primary and secondary health facilities in Sokoto metropolis. Data on demographic characteristics, adherence to RDT result and its influencing factors were collected from the HCWs. Adherence was categorized into good if adherence score is ≥ 4 and poor if otherwise. Chi-squared test was used to test association between adherence to test results and patients' fever presentation, expectation to be given anti-malarials, prior HCWs' case management training, among others. Independent predictors of adherence to RDT results were ascertained. RESULTS:Respondents' mean age was 33.5 ± 7.9 years, 190 (72.5%) worked in Primary Health Care facilities, 112 (42.8%) were Community Health Workers, 178 (67.9%) had National Diploma Certificate. The median years of practice was 5.0 (IQR: 3-10) years, while 118 (45.0%) had at most 4 years of practice. Overall, 211 (80.5%) had good adherence to RDT results. About 108 (89.3%) of HCWs who had training on malaria case management and 35 (89.7%) certificate holders had good adherence to RDT results. Predictors of adherence to test results were presence of fever in the patient [adjusted odds ratio (aOR): 2.53, 95% confidence interval (CI) 1.18-5.43], patients' expectation to be given anti-malarial medicines by the HCW (aOR: 3.06, 95% CI 1.42-6.58) and having been trained on malaria case management (aOR: 2.63; 95% CI 1.26-5.44). CONCLUSION:High level of adherence to RDT results among HCWs in Sokoto metropolis could be attributed to prior malaria case management training and HCWs' confidence in the national treatment guidelines. Continual training and supportive supervision of HCWs on malaria case management might optimize the current level of adherence to RDT results in Sokoto metropolis, Nigeria. Similarly, patients/caregivers' health education could aid better understanding of the need for anti-malarials thus reducing unnecessary demand.

Dataset Information

Molecular characterization and phylogenetic analysis of orf virus isolated from goats in Sokoto metropolis, Nigeria.

Aim

Materials & methods

Results and discussion

Conclusion

Publications

Molecular characterization and phylogenetic analysis of orf virus isolated from goats in Sokoto metropolis, Nigeria.

Similar Datasets

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