Serological evidence of Rift Valley fever viral infection among camels imported into Southern Algeria

Trabelsi, Melissa Katia; Hachid, Aissam; Derrar, Fawzi; Messahel, Nacer Eddine; Bia, Taha; Mockbel, Youcef; Khardine, Ahmed Fayez; Degui, Djilali; Bellout, Lydia; Benaissa, Mohammed Hocine; Leulmi, Hamza; Khelef, Djamel; Kaidi, Rachid; Hakem, Ahcéne; Bouguedour, Rachid; Bitam, Idir; Lafri, Ismail

doi:10.1016/j.cimid.2023.102035

Cited by 4 publications

(1 citation statement)

References 42 publications

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“…A systematic review of some of the serological studies performed in Africa reported a median seroprevalence of 12.9% in sheep, 12.6% in cattle, 11.3% in wildlife and 5.9% in humans, with the range varying dramatically, especially when comparing studies during outbreaks to seroprevalence investigations [13]. Additionally, there have been multiple RVFV seropositive cases within Turkey and Tunisia to indicate presence of the virus in these areas, as well as other serological fi ndings within Algeria, Western Sahara, Libya, Iraq and Iran which might warrant further surveillance for RVFV in these regions [14][15][16][17][18][19][20][21]. A number of other studies have been conducted in Sub-Saharan Africa to investigate potential risk factors and the seroprevalence of the virus in these regions [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Rift Valley Fever, an Emerging Viral Zoonosis Worthy of Increased Attention

van den Hurk,

Velayudhan*

2024

J Biomed Res Environ Sci

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Rift Valley Fever (RVF) is an emerging zoonotic disease transmitted by mosquitoes. Though North America is considered free of RVF, surveillance and monitoring of high-risk groups would be important for early detection of potential introduction of the disease. Rift Valley Fever Virus (RVFV) is an RNA virus that primarily affects livestock but can also infect humans with varying severity of infection. Though the disease is mainly prevalent in African countries, the vectors involved in the transmission of RVF are present in many regions in the American and European continents. So, the potential for emergence of this disease in new geographical locations is imminent. There is an unmet need for development of improved research and diagnostic tools to further investigate and manage RVF and to better understand its significance from a One Health perspective.

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Section: Introductionmentioning

confidence: 99%

Rift Valley Fever, an Emerging Viral Zoonosis Worthy of Increased Attention

van den Hurk,

Velayudhan*

2024

J Biomed Res Environ Sci

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A Review of Nonhuman Primate Models of Rift Valley Fever Virus Infection: Progress, Challenge Strains, and Future Directions

Ebisine,

Quist,

Findlay-Wilson

et al. 2024

Pathogens

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Rift Valley fever (RVF) is a mosquito-borne viral disease that primarily affects animals, especially ruminants, but has the capacity to infect humans and result in outbreaks. Infection with the causative agent, RVF virus (RVFV), causes severe disease in domestic animals, especially sheep, resulting in fever, anorexia, immobility, abortion, and high morbidity and mortality rates in neonate animals. Humans become infected through exposure to infected animals and, less frequently, directly via a mosquito bite. A greater awareness of RVFV and its epidemic potential has resulted in increased investment in the development of interventions, especially vaccines. There is currently no substitute for the use of animal models in order to evaluate these vaccines. As outbreaks of RVF disease are difficult to predict or model, conducting Phase III clinical trials will likely not be feasible. Therefore, representative animal model systems are essential for establishing efficacy data to support licensure. Nonhuman primate (NHP) species are often chosen due to their closeness to humans, reflecting similar susceptibility and disease kinetics. This review covers the use of NHP models in RVFV research, with much of the work having been conducted in rhesus macaques and common marmosets. The future direction of RVF work conducted in NHP is discussed in anticipation of the importance of it being a key element in the development and approval of a human vaccine.

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Modeling Rift Valley fever transmission: insights from fractal-fractional dynamics with the Caputo derivative

Jan,

Razak,

Qureshi

et al. 2024

MMC

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<abstract><p>The infection caused by Rift Valley fever (RVF) virus is a dangerous vector-borne disease found in humans, domestic, and wild animals. It is transferred through insect vectors to ruminant host and then spread through direct contact of infected animals with their body fluid or organs. In this paper, a fractal-fractional model for the transmission of RVF in the Caputo's sense was presented. We analyzed the model and determined the basic reproduction number through the next-generation matrix technique, indicated by $ \mathcal{R}_0 $. The global sensitivity technique is used for the sensitivity test of $ \mathcal{R}_0 $ to find out the most sensitive input-factors to the reproduction parameter $ \mathcal{R}_0 $. The existence and uniqueness results of the proposed fractal-fractional model were established. Then, we presented the fractal-fractional dynamics of the proposed RVF model through a novel numerical scheme under the fractal-fractional Caputo operator. In the end, the recommended model of RVF was highlighted numerically with the variation of different input parameters of the system. The key factors of the system were highlighted to the policymakers for the control and prevention of the infection.</p></abstract>

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Serological evidence of Rift Valley fever viral infection among camels imported into Southern Algeria

Cited by 4 publications

References 42 publications

Rift Valley Fever, an Emerging Viral Zoonosis Worthy of Increased Attention

Rift Valley Fever, an Emerging Viral Zoonosis Worthy of Increased Attention

A Review of Nonhuman Primate Models of Rift Valley Fever Virus Infection: Progress, Challenge Strains, and Future Directions

Modeling Rift Valley fever transmission: insights from fractal-fractional dynamics with the Caputo derivative

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