Prevalence of Rift Valley fever in domestic ruminants in the central and northern regions of Burkina Faso

Boussini, H.; Lamien, Charles Euloge; Nacoulma, Odile Germaine; Kaboré, Adama; Poda, G. E. A.; Viljoen, G. J.

doi:10.20506/rst.33.3.2327

Cited by 21 publications

(23 citation statements)

References 21 publications

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“…Seroprevalence on farms on which RVF had previously been confirmed was 24.7% (95% CI: 21.9-27.7%) compared to 20.9% (95% CI: 19.1-22.9%) on farms where it was not known to have occurred (P = 0.027) ( Table 1). Seroprevalence on farms that reported abortions during the past three months was 24.6% (95% CI: 21.6-27.9%) vs. 19.1% (95% CI: Figure 2. Geographic distribution of RVFV seropositivity across the study area in all unvaccinated livestock, and in cattle, sheep and goats, produced using a generalized additive model with a Gaussian process basis function.…”

Section: Resultsmentioning

confidence: 99%

Patterns of Rift Valley fever virus seropositivity in domestic ruminants in central South Africa four years after a large outbreak

Ngoshe

Avenant

Rostal

et al. 2020

Sci Rep

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Rift Valley fever (RVf) is a mosquito-borne viral zoonosis showing complex epidemiological patternsthat are poorly understood in South Africa. Large outbreaks occur in the central interior at long, irregular intervals, most recently in 2010-2011; however, the level of herd immunity of ruminant livestock, a key determinant of outbreaks, is unknown. During 2015-2016 a cross-sectional study on 234 randomly-selected farms investigated the prevalence, patterns of, and factors associated with, antibodies to RVF virus (RVFV) in livestock in an area heavily affected by that outbreak. A RVFV inhibition ELISA was used to screen 977 cattle, 1,549 sheep and 523 goats and information on potential risk factors was collected using a comprehensive questionnaire. the estimated RVfV seroprevalence, adjusted for survey design, was 42.9% in cattle, 28.0% in sheep and 9.3% in goats, showing a high degree of farm-level clustering. Seroprevalence increased with age and was higher on private vs. communal land, on farms with seasonal pans (temporary, shallow wetlands) and perennial rivers and in recently vaccinated animals. Seropositivity amongst unvaccinated animals born after the last outbreak indicates likely viral circulation during the post-epidemic period. the current level of herd immunity in livestock may be insufficient to prevent another large outbreak, should suitable conditions recur.Rift Valley fever (RVF) is an arthropod-borne viral zoonosis caused by RVF virus (RVFV), a member of the Phlebovirus genus, family Phenuiviridae of the recently established order Bunyavirales 1 . RVF is endemic primarily in sub-Saharan Africa but has crossed several barriers including the Sahara to Egypt, the Red Sea to the Arabian Peninsula and the Indian Ocean to the Comoros, Mayotte and Madagascar 2-4 . Spread through infected animals and mosquitoes to countries where the disease is not endemic is increasingly possible, with more frequent export of livestock from Africa to other countries and the presence of known or potentially competent vectors in those countries 4,5 . RVFV causes sporadic outbreaks with high morbidity and mortality, characterized by abortion storms and high mortalities in neonatal sheep, cattle and goats 6,7 . Human infection generally occurs concurrently with disease outbreaks in domestic ruminants 2,5,8 , where humans work or live in close contact with livestock.Outbreaks tend to occur following above average rainfall and localized flooding 9 . These climatic conditions favour breeding of floodwater mosquitoes that are the proposed maintenance vectors of this virus via transovarial transmission 10 . The floodwater mosquitoes considered to be vectors on the interior plateau of South Africa are those in the Aedes subgenera Ochlerotatus and Neomelaniconion 11 . Outbreaks may then be amplified by epidemic vectors, of which Culex theileri is considered the most important on the interior plateau 12 . Risk factor studies conducted during and after outbreaks in both humans and animals have identified several other environmental, ...

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Section: Resultsmentioning

confidence: 99%

Patterns of Rift Valley fever virus seropositivity in domestic ruminants in central South Africa four years after a large outbreak

Ngoshe

Avenant

Rostal

et al. 2020

Sci Rep

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“…The investigation found that 18 cattle, 8 goats, and 14 sheep were seropositive for the RVFV antibodies. Interestingly, the study observed a varying seroprevalence among the sampling sites [92].…”

Section: Burkina Fasomentioning

confidence: 75%

“…The significance of the environment in the emergence and re-emergence of infectious zoonotic virus diseases can be understood from the RVF outbreaks within Africa. The seroprevalence of anti-RVFV antibodies in ruminants, including cattle, goats, and sheep, living around wetland areas in Africa suggested the role of wet environmental conditions in disease progression [92]. Exceptional rainfalls led to flood-like situations in African grasslands, which have been reported to serve as favorable sites for the RVFV vector, the Culex mosquitoes; as a result, RVF outbreaks have occurred following exceptional rainfalls within Africa [302,303].…”

Section: Discussionmentioning

confidence: 99%

Systematic Review of Important Viral Diseases in Africa in Light of the ‘One Health’ Concept

et al. 2020

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Emerging and re-emerging viral diseases are of great public health concern. The recent emergence of Severe Acute Respiratory Syndrome (SARS) related coronavirus (SARS-CoV-2) in December 2019 in China, which causes COVID-19 disease in humans, and its current spread to several countries, leading to the first pandemic in history to be caused by a coronavirus, highlights the significance of zoonotic viral diseases. Rift Valley fever, rabies, West Nile, chikungunya, dengue, yellow fever, Crimean-Congo hemorrhagic fever, Ebola, and influenza viruses among many other viruses have been reported from different African countries. The paucity of information, lack of knowledge, limited resources, and climate change, coupled with cultural traditions make the African continent a hotspot for vector-borne and zoonotic viral diseases, which may spread globally. Currently, there is no information available on the status of virus diseases in Africa. This systematic review highlights the available information about viral diseases, including zoonotic and vector-borne diseases, reported in Africa. The findings will help us understand the trend of emerging and re-emerging virus diseases within the African continent. The findings recommend active surveillance of viral diseases and strict implementation of One Health measures in Africa to improve human public health and reduce the possibility of potential pandemics due to zoonotic viruses.

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“…The disease and the factors behind its emergence is something many African countries are working for to get a better understanding of epidemiological and surveillance studies in animal have been performed in some exposed countries (Jeanmaire et al, 2011). The studies have also evaluated risks (Anyamba et al, 2010), developed methods (Paweska et al, 2003a;Fafetine et al, 2007;Van Vuren et al, 2007;Boussini et al, 2014) and considered transmission to new areas (Balkhy and Memish, 2003).…”

Section: Introductionmentioning

confidence: 99%

Seroprevalence and Economic Impact of Rift Valley Fever Among Small Ruminants

Selim¹,

Kamel²,

Ibrahim³

2015

Asian J. of Animal and Veterinary Advances

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Rift Valley Fever (RVF) is an acute, mosquito-borne viral disease that has a significant global threat to humans and livestock. The seroprevalence and economic impact of RVF among small ruminants in some localities in Egypt were studied. The antibodies against RVF were detected using three serological tests ELISA, AGPT and SNT. The obtained results showed high incidence of RVF in sheep and in El-Sharkia and Marsa Matrouh than in goat and in El-Dakhalia and El-Kaliobia governorates. Moreover, the SNT and ELISA showed higher sensitivity than AGPT. The SNT was sensitive and save the money in comparison with other test but less specific. Therefore, ELISA is most sensitive and economic test for detection of RVF among small ruminant.

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Prevalence of Rift Valley fever in domestic ruminants in the central and northern regions of Burkina Faso

Cited by 21 publications

References 21 publications

Patterns of Rift Valley fever virus seropositivity in domestic ruminants in central South Africa four years after a large outbreak

Patterns of Rift Valley fever virus seropositivity in domestic ruminants in central South Africa four years after a large outbreak

Systematic Review of Important Viral Diseases in Africa in Light of the ‘One Health’ Concept

Seroprevalence and Economic Impact of Rift Valley Fever Among Small Ruminants

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