E-ISSN 2218-6050 | ISSN 2226-4485
 

Original Article


Role of Eco-Climatic Factors in the Distribution of Bluetongue in Endemic Areas in Tunisia

Thameur Ben Hassine, Soufiène Sghaier, Sara Thabet, Héni Haj Ammar, Salah Hammami.


Cited By:3

Abstract
Abstract
Background: Bluetongue (BT) is an important infectious, non-contagious, OIE-listed viral disease of domestic and wild ruminants.The disease is transmitted among susceptible animals by a few species of an insect vector in the genus Culicoides. Recently, during the fall of 2020 (September and October), a BTV-4 epizootic marked the epidemiological situation in several delegations of Tunisia with clinical cases recorded in sheep and cattle.
Aim: Determine the eco-climatic variables that were most likely associated with delegations reporting BT cases, using logistic regression model (LRM).
Results: Our findings, based on the LRM, demonstrated that the key factors that contributed significantly to the distribution of BT cases among delegations in Tunisia included day and night land surface temperatures (DLST) and normalized difference vegetation index (NDVI). Positive correlation between sheep distribution and rainfall amounts was demonstrated. Statistical analysis focusing on the most affected delegations during the BT epidemic (the Sahel and the Centre of Tunisia) demonstrated that the epidemic situation seems to be a consequence of the combination of the following environmental parameters: NDVI with values ranging between 0.16-0.3, moderate rainfall 2-4-fold above the normal (10-50mm) and DLST values between 32 and 34°C.
Conclusion: These findings allow to suggest and develop a robust and efficient early warning surveillance program in risk areas based on eco-climatic risk factors.

Key words: Bluetongue, Tunisia, Eco-climatic factors, logistic-regression-analysis


 
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How to Cite this Article
Pubmed Style

Hassine TB, Sghaier S, Thabet S, Ammar HH, Hammami S, . Role of Eco-Climatic Factors in the Distribution of Bluetongue in Endemic Areas in Tunisia. Open Vet J. 2022; 12(1): 114-123. doi:10.5455/OVJ.2022.v12.i1.14


Web Style

Hassine TB, Sghaier S, Thabet S, Ammar HH, Hammami S, . Role of Eco-Climatic Factors in the Distribution of Bluetongue in Endemic Areas in Tunisia. https://www.openveterinaryjournal.com/?mno=122687 [Access: July 13, 2024]. doi:10.5455/OVJ.2022.v12.i1.14


AMA (American Medical Association) Style

Hassine TB, Sghaier S, Thabet S, Ammar HH, Hammami S, . Role of Eco-Climatic Factors in the Distribution of Bluetongue in Endemic Areas in Tunisia. Open Vet J. 2022; 12(1): 114-123. doi:10.5455/OVJ.2022.v12.i1.14



Vancouver/ICMJE Style

Hassine TB, Sghaier S, Thabet S, Ammar HH, Hammami S, . Role of Eco-Climatic Factors in the Distribution of Bluetongue in Endemic Areas in Tunisia. Open Vet J. (2022), [cited July 13, 2024]; 12(1): 114-123. doi:10.5455/OVJ.2022.v12.i1.14



Harvard Style

Hassine, T. B., Sghaier, S., Thabet, S., Ammar, H. H., Hammami, S. & (2022) Role of Eco-Climatic Factors in the Distribution of Bluetongue in Endemic Areas in Tunisia. Open Vet J, 12 (1), 114-123. doi:10.5455/OVJ.2022.v12.i1.14



Turabian Style

Hassine, Thameur Ben, Soufiène Sghaier, Sara Thabet, Héni Haj Ammar, Salah Hammami, and . 2022. Role of Eco-Climatic Factors in the Distribution of Bluetongue in Endemic Areas in Tunisia. Open Veterinary Journal, 12 (1), 114-123. doi:10.5455/OVJ.2022.v12.i1.14



Chicago Style

Hassine, Thameur Ben, Soufiène Sghaier, Sara Thabet, Héni Haj Ammar, Salah Hammami, and . "Role of Eco-Climatic Factors in the Distribution of Bluetongue in Endemic Areas in Tunisia." Open Veterinary Journal 12 (2022), 114-123. doi:10.5455/OVJ.2022.v12.i1.14



MLA (The Modern Language Association) Style

Hassine, Thameur Ben, Soufiène Sghaier, Sara Thabet, Héni Haj Ammar, Salah Hammami, and . "Role of Eco-Climatic Factors in the Distribution of Bluetongue in Endemic Areas in Tunisia." Open Veterinary Journal 12.1 (2022), 114-123. Print. doi:10.5455/OVJ.2022.v12.i1.14



APA (American Psychological Association) Style

Hassine, T. B., Sghaier, S., Thabet, S., Ammar, H. H., Hammami, S. & (2022) Role of Eco-Climatic Factors in the Distribution of Bluetongue in Endemic Areas in Tunisia. Open Veterinary Journal, 12 (1), 114-123. doi:10.5455/OVJ.2022.v12.i1.14