Towards a better understanding of Rift Valley fever epidemiology in the south-west of the Indian Ocean

Balenghien, Thomas; Cardinale, Éric; Chevalier, Véronique; Élissa, Nohal; Failloux, Anna‐Bella; Nipomichene, Thiery Nirina Jean Jose; Nicolas, G.; Rakotoharinome, Vincent Michel; Roger, Matthieu; Zumbo, Betty

doi:10.1186/1297-9716-44-78

Cited by 60 publications

(53 citation statements)

References 51 publications

(73 reference statements)

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“…Rift Valley fever (RVF) is an arthropod-borne zoonotic viral disease affecting mainly domestic and wild ruminants, as well as humans. Outbreaks in humans have been reported in 19 countries across Africa, the Indian Ocean islands, and the Arabian Peninsula [4].…”

Section: Introductionmentioning

confidence: 99%

Rift Valley fever in kidney transplant recipient returning from Mali with viral RNA detected in semen up to four months from symptom onset, France, autumn 2015

et al. 2016

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A 29-year-old kidney transplant recipient returning from Mali was diagnosed with Rift Valley fever (RVF) in France in autumn 2015. The patient was immunosuppressed due to his renal transplant. IgM and IgG specific to RVF virus (RVFV) were detected in cerebrospinal fluid and blood up to two months after symptom onset, whereas in urine, RVFV genomic RNA was detected by RT-PCR up to three months, and in semen up to four months post symptom onset.

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Section: Introductionmentioning

confidence: 99%

Rift Valley fever in kidney transplant recipient returning from Mali with viral RNA detected in semen up to four months from symptom onset, France, autumn 2015

et al. 2016

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“…We used Markov Jumps to infer possible introduction events and movement routes of RVFV. Two types of RVFV movements can be considered: short- and long-distance jumps [32,49,50]. Inferred movements between distant countries may omit the effects of unsampled lineages in countries on the route between them.…”

Section: Discussionmentioning

confidence: 99%

Phylogeography of Rift Valley Fever Virus in Africa and the Arabian Peninsula

2017

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Rift Valley Fever is an acute zoonotic viral disease caused by Rift Valley Fever virus (RVFV) that affects ruminants and humans in Sub-Saharan Africa and the Arabian Peninsula. We used phylogenetic analyses to understand the demographic history of RVFV populations, using sequence data from the three minigenomic segments of the virus. We used phylogeographic approaches to infer RVFV historical movement patterns across its geographic range, and to reconstruct transitions among host species. Results revealed broad circulation of the virus in East Africa, with many lineages originating in Kenya. Arrival of RVFV in Madagascar resulted from three major waves of virus introduction: the first from Zimbabwe, and the second and third from Kenya. The two major outbreaks in Egypt since 1977 possibly resulted from a long-distance introduction from Zimbabwe during the 1970s, and a single introduction took RVFV from Kenya to Saudi Arabia. Movement of the virus between Kenya and Sudan, and CAR and Zimbabwe, was in both directions. Viral populations in West Africa appear to have resulted from a single introduction from Central African Republic. The overall picture of RVFV history is thus one of considerable mobility, and dynamic evolution and biogeography, emphasizing its invasive potential, potentially more broadly than its current distributional limits.

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“…Vertical transmission has been reported for Rift Valley fever virus [15], LACV, the Murray Valley encephalitis virus (MVEV), JEV, EEEV [4], ZIKV, and DENV [16-18]. Although vertical transmission in A. aegypti has been reported only for ZIKV [19], DENV [16, 20], and CHIKV [21-24].…”

Section: Mosquitoes As Vectorsmentioning

confidence: 99%

Molecular Basis for Arbovirus Transmission by <b><i>Aedes aegypti</i></b> Mosquitoes

et al. 2018

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Mosquitoes are considered the most important vectors for the transmission of pathogens to humans. Aedes aegypti is a unique species, not only by its highly anthropophilic and peridomestic habits but also because it can transmit an important variety of pathogenic viruses. Examples are dengue, yellow fever, chikungunya, Zika, and Mayaro viruses. After ingesting viremic blood, a wide range of mechanisms are activated in the mosquito to counteract viral infection. Nevertheless, these arboviruses possess strategies to overcome barriers in the mosquito and eventually reach the salivary glands to continue the transmission cycle. However, the infection and eventual transmission of arbovirus depends on multiple factors. The current review focuses in detail on the anatomic, physiological, and molecular characteristics of the mosquito A. aegypti that participate in response to a viral infection. In the past decades, the awareness of the importance of this mosquito as a disease vector and its impact on human health was largely recognized. We need to improve our comprehension of molecular mechanisms that determine the outcome of successful virus replication or control of infection for each arbovirus in the vector; this could lead to the design of effective control strategies in the future.

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Towards a better understanding of Rift Valley fever epidemiology in the south-west of the Indian Ocean

Cited by 60 publications

References 51 publications

Rift Valley fever in kidney transplant recipient returning from Mali with viral RNA detected in semen up to four months from symptom onset, France, autumn 2015

Rift Valley fever in kidney transplant recipient returning from Mali with viral RNA detected in semen up to four months from symptom onset, France, autumn 2015

Phylogeography of Rift Valley Fever Virus in Africa and the Arabian Peninsula

Molecular Basis for Arbovirus Transmission by <b><i>Aedes aegypti</i></b> Mosquitoes

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