scholarly journals Lumpy skin disease in southern Africa : a review of the disease and aspects of control

2001 ◽  
Vol 72 (2) ◽  
Author(s):  
P. Hunter ◽  
D. Wallace
Keyword(s):  
South Africa ◽  
Southern Africa ◽  
Skin Disease ◽  
Control Measures ◽  
Lumpy Skin Disease ◽  
Strain Vaccine ◽  
Successful Control

This article reviews some of the important aspects of lumpy skin disease (LSD) that may impact on its successful control. A resurgence of the disease in the last decade has highlighted some constraints of the Neethling strain vaccine, but there is no evidence of vaccine breakdowns owing to the presence of heterologous field strains. More research is needed on epidemiology and transmission of LSD in South Africa to formulate control measures.

Lantana camara (lantana).

2021 ◽  
Author(s):  
Sarah E. Thomas ◽  
Julissa Rojas-Sandoval ◽  
Pedro Acevedo-Rodríguez
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Control Measures ◽  
Economic Losses ◽  
Pests And Diseases ◽  
Control Programmes ◽  
Agricultural Weed ◽  
Successful Control ◽  
The Tropics ◽  
Ornamental Shrub

Abstract L. camara is a highly variable ornamental shrub, native of the neotropics. It has been introduced to most of the tropics and subtropics as a hedge plant and has since been reported as extremely weedy and invasive in many countries. It is generally deleterious to biodiversity and has been reported as an agricultural weed resulting in large economic losses in a number of countries. In addition to this, it increases the risk of fire, is poisonous to livestock and is a host for numerous pests and diseases. L. camara is difficult to control. In Australia, India and South Africa aggressive measures to eradicate L. camara over the last two centuries have been largely unsuccessful, and the invasion trajectory has continued upwards despite control measures. This species has been the target of biological control programmes for over a century, with successful control only being reported in a few instances.

Epizootic features and control measures for lumpy skin disease in south‐east Serbia in 2016

2019 ◽  
Vol 66 (5) ◽  
pp. 2087-2099 ◽  
Author(s):  
Marija Manić ◽  
Marko Stojiljković ◽  
Miloš Petrović ◽  
Jakov Nišavić ◽  
Dragan Bacić ◽  
...  
Keyword(s):  
Skin Disease ◽  
Control Measures ◽  
Lumpy Skin Disease ◽  
And Control

scholarly journals Potential link of single nucleotide polymorphisms to virulence of vaccine‐associated field strains of lumpy skin disease virus in South Africa

2020 ◽  
Vol 67 (6) ◽  
pp. 2946-2960
Author(s):  
Antoinette Schalkwyk ◽  
Pravesh Kara ◽  
Karen Ebersohn ◽  
Arshad Mather ◽  
Cornelius Henry Annandale ◽  
...  
Keyword(s):  
South Africa ◽  
Single Nucleotide Polymorphisms ◽  
Disease Virus ◽  
Skin Disease ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Lumpy Skin Disease ◽  
Lumpy Skin Disease Virus ◽  
Potential Link

scholarly journals Comparative Analysis of Spatial-temporal Patterns of Human Metapneumovirus and Respiratory Syncytial Virus in Africa Using Genetic Data, 2011-2014

2020 ◽  
Author(s):  
John W Oketch ◽  
Everlyn Kamau ◽  
James R Otieno ◽  
Anthony Mwema ◽  
Clement Lewa ◽  
...  
Keyword(s):  
South Africa ◽  
Respiratory Syncytial Virus ◽  
Southern Africa ◽  
Spatial Clustering ◽  
Temporal Patterns ◽  
Human Metapneumovirus ◽  
Control Measures ◽  
Respiratory Illnesses ◽  
Syncytial Virus ◽  
Viral Sequences

Abstract Background: Human metapneumovirus (HMPV) and respiratory syncytial virus (RSV) are leading causes of viral severe acute respiratory illnesses in childhood. Both the two viruses belong to the Pneumoviridae family and show overlapping clinical, epidemiological and transmission features. However, it is unknown whether these two viruses have similar geographic spread patterns which may provide insight into designing and evaluating their epidemic control measures.Methods: We conducted comparative phylogenetic and phylogeographic analyses to explore the spatial-temporal patterns of HMPV and RSV across Africa using 232 HMPV and 842 RSV attachment (G) glycoprotein gene sequences obtained from 5 countries (The Gambia, Zambia, Mali, South Africa, and Kenya) between August 2011 and January 2014. Results: Phylogeographic analyses found frequently similar patterns of spread of RSV and HMPV. Viral sequences commonly clustered by region, i.e., West Africa (Mali, Gambia), East Africa (Kenya) and Southern Africa (Zambia, South Africa), and similar genotype dominance patterns were observed between neighbouring countries. Both HMPV and RSV country epidemics were characterized by co-circulation of multiple genotypes. Sequences from different African sub-regions (East, West and Southern Africa) fell into separate clusters interspersed with sequences from other countries globally. Conclusion: The spatial clustering patterns of viral sequences and genotype dominance patterns observed in our analysis suggests strong regional links and predominant local transmission. The geographical clustering further suggests independent introduction of HMPV and RSV variants in Africa from the global pool, and local regional diversification.

Risk analysis of lumpy skin disease in Turkey

2016 ◽  
Author(s):  
Ömer Baris Ince ◽  
Serkan Çakir ◽  
Mehmet Ali Dereli
Keyword(s):  
Risk Analysis ◽  
Skin Disease ◽  
Control Strategies ◽  
Animal Health ◽  
Economic Loss ◽  
Control Measures ◽  
Lumpy Skin Disease ◽  
The World ◽  
Potential Risks ◽  
And Control

Lumpy Skin Disease (LSD) in Turkish cattle appeared suddenly two years ago. This study evaluates potential risks of LSD and recommends appropriate control measures. The World Animal Health Organization’s protocol was used for the risk analysis. Likelihoods for disease release and exposure were estimated with a qualitative scale ranging from negligible to high. Outbreaks were recorded in nine provinces in Turkey. Total economic loss due to the disease was estimated to be $241.903.500 US dollars. The risk analysis suggests a greater than negligible risk. Therefore, disease prevention and control strategies should be considered by the Turkish Veterinary Authority.

scholarly journals Quantifying and modelling the acquisition and retention of lumpy skin disease virus by haematophagus insects reveals clinically but not subclinically-affected cattle are promoters of viral transmission and key targets for control of disease outbreaks

2020 ◽  
Author(s):  
Beatriz Sanz-Bernardo ◽  
Ismar R. Haga ◽  
Najith Wijesiriwardana ◽  
Sanjay Basu ◽  
Will Larner ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Disease Virus ◽  
Skin Disease ◽  
Control Measures ◽  
Stomoxys Calcitrans ◽  
Effective Control ◽  
Vector Species ◽  
Lumpy Skin Disease ◽  
Lumpy Skin Disease Virus

AbstractLumpy skin disease virus (LSDV), a poxvirus that causes severe disease in cattle, has in the last few years rapidly extended its distribution from Africa and the Middle East into Europe, Russia, and across Asia. LSDV is believed to be primarily spread mechanically by blood-feeding arthropods, however the exact mode of arthropod transmission, the relative ability of different arthropod species to acquire and retain the virus, as well as their comparative importance for LSDV transmission, remain poorly characterised. Since the vector-borne nature of LSDV transmission is believed to have enabled the rapid geographic expansion of this virus, the lack of quantitative evidence on LSDV transmission has impeded effective control of the disease during the current epidemic. Obtaining high quality data on virus transmission by arthropods is challenging, and practical limitations often result in inadequate arthropod numbers or model hosts, limiting the transferability of experimental findings to the natural transmission scenario.We have addressed these limitations in this study. Using a highly representative bovine experimental model of lumpy skin disease we allowed four representative vector species (Aedes aegypti, Culex quinquefasciatus, Stomoxys calcitrans and Culicoides nubeculosus) to blood-feed on LSDV-inoculated cattle in order to examine the acquisition and retention of LSDV by these species in unprecedented detail. We found the probability of LSDV transmission from clinical cattle to vector correlated with disease severity. Subclinical disease was more common than clinical disease in the inoculated cattle, however the probability of vectors acquiring LSDV from subclinical animals was very low.All four potential vector species studied had a similar rate of acquisition of LSDV after feeding on the host, but Aedes aegypti and Stomoxys calcitrans retained the virus for a longer time, up to 8 days. There was no evidence of virus replication in the vector, consistent with mechanical rather than biological transmission. The parameters obtained in the in-vivo transmission experiments subsequently enabled enhanced modelling approaches to determine the basic reproduction number of LSDV in cattle mediated by each of the insect species. This was highest for Stomoxys calcitrans (19.1), C. nubeculosus (7.4), and Ae. aegypti (2.4), surprisingly indicating these three species are all potentially efficient transmitters of LSDV. These results reveal that currently applied LSDV control measures such as stamping out of all cattle on affected premises or insect control measures targeting single species need to be urgently reconsidered. Overall our studies have highlighted that the combination of highly relevant in-vivo experiments and mathematical modelling can be directly applied to devise evidence-based proportionate and targeted control programmes.

scholarly journals Emergence of the First Lumpy Skin Disease Outbreak Among Livestock in the Republic of Kazakhstan in 2016.

2020 ◽  
Author(s):  
Arman Issimov ◽  
Nurkuisa Rametov ◽  
Kuandyk Zhugunissov ◽  
Lespek Kutumbetov ◽  
Assylbek Zhanabayev ◽  
...  
Keyword(s):  
Skin Disease ◽  
Preliminary Investigation ◽  
Viral Disease ◽  
Control Measures ◽  
Disease Spread ◽  
African Continent ◽  
Cattle Farm ◽  
Lumpy Skin Disease ◽  
The Republic ◽  
West Kazakhstan

Lumpy skin disease (LSD) is an emerging transboundary viral disease of cattle originating from the African continent. Here we describe the first LSD outbreak reported in the Republic of Kazakhstan, in July 2016. Initially, LSD was reported in a cattle farm located 49 km from Kazakh –Russian border in, Atyrau Oblast in West Kazakhstan. Subsequently, the disease spread to neighbouring farms situated within the same district. Following a preliminary investigation, the local State Veterinary Service declared a strict quarantine according to the State Contingency Plan, along with immediate total stamping out and cattle movement restrictions. During the outbreak, the number of affected cattle within an epidemiological unit reached 459 cattle out of registered 3557 susceptible cattle with 12.90% morbidity and 0.96%, mortality. This manuscript presents the epidemiological situation, the diagnosis, the control measures including mass vaccination and the stamping out campaign.s

scholarly journals Complete Genome Sequence of Lumpy Skin Disease Virus Isolate SERBIA/Bujanovac/2016, Detected during an Outbreak in the Balkan Area

2017 ◽  
Vol 5 (35) ◽  
Author(s):  
Ivan Toplak ◽  
Tamaš Petrović ◽  
Dejan Vidanović ◽  
Sava Lazić ◽  
Milanko Šekler ◽  
...  
Keyword(s):  
South Africa ◽  
Disease Virus ◽  
Genome Sequence ◽  
Complete Genome Sequence ◽  
Skin Disease ◽  
Complete Genome ◽  
Virus Isolate ◽  
Lumpy Skin Disease ◽  
Lumpy Skin Disease Virus ◽  
Balkan Area

ABSTRACT The lumpy skin disease virus (LSDV) isolate SERBIA/Bujanovac/2016 consists of 150,661 nucleotides and has a 99.95% nucleotide identity with the Neethling Warmbaths LW strain isolated in South Africa in 1999. This is the first complete LSDV genome determined in Serbia and also in the Balkan area.

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