scholarly journals Molecular Characterization of Lumpy Skin Disease Virus Isolates from Outbreak Cases in Cattle from Sawena District of Bale Zone, Oromia, Ethiopia

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Shubisa Abera Leliso ◽  
Fufa Dawo Bari ◽  
Tesfaye Rufael Chibssa
Keyword(s):  
Skin Disease ◽  
Molecular Techniques ◽  
Effective Control ◽  
Economic Losses ◽  
Morbidity Rate ◽  
Lumpy Skin Disease ◽  
Significant Difference ◽  
Nasal Swabs ◽  
Skin Biopsies ◽  
Bale Zone

Lumpy skin disease (LSD) is a viral disease caused by LSD virus and is one of the most economically significant transboundary and emerging diseases of cattle. LSD causes considerable economic losses due to emaciation, damage to hides, infertility, and loss of milk production. In Ethiopia, the disease is distributed almost in all regions and is regarded as one of the most economically important livestock diseases in the country. An outbreak investigation of the disease was monitored from October 2016 to April 2017 in southern pastoral areas of Bale Zone, Oromia, Ethiopia. In December 2016, LSD outbreak occurred in Sawena district of Bale Zone, from which necessary biopsy samples were collected from actively infected animals for the purpose of virus isolation, and characterization using different molecular techniques at National Animal Health and Diagnostic Investigation Center (NAHDIC) of Sebeta, Ethiopia. In addition, clinical examination of infected and in-contact animals was carried out together with a questionnaire survey. Based on the clinical manifestations, LSD was recorded in 18% (94/522) of examined cattle, whereas biopsy samples from 20 clinically positive animals were collected for further laboratory process. The morbidity rate was higher in animals less than two years 28.97% (31/107) than other ages and showed a statistically significant difference with P < 0.05 . Female animals showed higher morbidity rate of 20.59% (76/369) than male animals (11.76%) (18/153) with a significant difference at P ≤ 0.003 . Mortality rate and case fatality were also significantly higher in young animals than other age groups. Viruses were isolated from both skin biopsies and nasal swabs on Vero cell line. From both skin biopsies and nasal swabs, the virus DNA was identified by amplifying the 172 bp DNA fragment using real-time and conventional PCR. Providing adequate diagnostic facilities, establishing strategic policies for effective control and eradication and awareness creations for communities for early identification or reporting were recommendations made to minimize economic losses of the disease.

scholarly journals Outbreak investigation of lumpy skin disease in dairy farms at Barishal, Bangladesh

2021 ◽  
Vol 9 (1) ◽  
pp. 205-209
Author(s):  
Md. Ibrahim Khalil ◽  
Mohammad Ferdous Rahman Sarker ◽  
F. M. Yasir Hasib ◽  
Sharmin Chowdhury
Keyword(s):  
Skin Disease ◽  
Dairy Farms ◽  
Effective Control ◽  
Morbidity Rate ◽  
Crossbred Cattle ◽  
Lumpy Skin Disease ◽  
Cattle Disease ◽  
Outbreak Area ◽  
Steroid Drugs ◽  
First Time

Lumpy skin disease is explained as a significant cattle disease affecting cattle of many parts of the world. An outbreak was experienced in different parts of Bangladesh including Barishal for the first time in the last quarter of 2019. This investigation was carried out to know the outbreak scenario of the disease in southern part of Bangladesh. A total of 726 cattle were included in this study covering 50 dairy farms of Barishal region from September 2019 to December 2019. Morbidity rate was found 21% (CI: 18-24%) and mortality was 1% (CI: 1-2%) in the outbreak area. Young animals (24%) and pregnant animals (70%) were significantly more susceptible compared to aged animals (17%) and non-pregnant animals (15%), respectively. Moreover, male and crossbred cattle were slightly more prone to the infection in comparison to their counterparts. About 45% of the affected animals showed nodular and remaining 55% had edematous lesions. Almost 90% of the affected animals were treated with NSAID followed by antibiotics, antihistaminic, steroid drugs and antiviral drugs where only 20% of the affected animals were treated by authorized veterinary personnel. This was the first epidemiological investigation in the mentioned outbreak area which may serve as a baseline for LSD research in the location needed for developing effective control strategy.

scholarly journals Molecular detection of cattle Sarcocystis spp. in North-West Italy highlights their association with bovine eosinophilic myositis

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Selene Rubiola ◽  
Tiziana Civera ◽  
Felice Panebianco ◽  
Davide Vercellino ◽  
Francesco Chiesa
Keyword(s):  
18S Rdna ◽  
Inflammatory Myopathy ◽  
Molecular Techniques ◽  
Diaphragm Muscle ◽  
Economic Losses ◽  
Intermediate Hosts ◽  
Slaughter Cattle ◽  
Significant Difference ◽  
Pcr Targeting

Abstract Background Cattle are intermediate hosts of six Sarcocystis species, among which Sarcocystis hominis and Sarcocystis heydorni can infect humans through the consumption of raw or undercooked meat. In addition to the zoonotic potential, there is increasing interest in these protozoa because of the evidence supporting the role of Sarcocystis spp. in the occurrence of bovine eosinophilic myositis (BEM), a specific inflammatory myopathy which leads to carcass condemnation and considerable economic losses. Actually, all the prevalence studies carried out on cattle in Italy have been based on either morphological or 18S rDNA-based molecular techniques, most likely leading to misidentification of closely related species. Therefore, there is a strong need for new data on the prevalence of the different Sarcocystis spp. in cattle in Italy and their association with bovine eosinophilic myositis. Methods To reach our aim, individual striated muscle samples from BEM condemned carcasses (N = 54) and diaphragm muscle samples from randomly sampled carcasses (N = 59) were obtained from Northwest Italy slaughterhouses. Genomic DNA was extracted and analyzed by multiplex-PCR targeting 18S rDNA and cox1 genes. PCR products amplified using the genus-specific primer set in absence of the specific fragment for S. hirsuta, S. cruzi, S. hominis or S. bovifelis were sequenced to achieve species identification. Results Sarcocystis DNA was detected in 67.8% of the samples from slaughter cattle and in 90.7% of the samples from BEM condemned carcasses. S. cruzi was identified as the most prevalent species in slaughter cattle (61%), followed by S. bovifelis (10.2%), S. hominis (8.5%) and S. hirsuta (1.7%). Notably, among the different Sarcocystis spp. detected, the presence of S. bovifelis and S. hominis was significantly higher in samples isolated from BEM condemned carcasses (46.3% and 40.7% respectively), while there was no statistically significant difference between the presence of S. cruzi or S. hirsuta in BEM condemned carcasses (42.6% and 1.8%, respectively) and randomly sampled carcasses. Furthermore, DNA sequence analysis revealed the presence of a putative new species in two carcasses. Conclusions Our study contributes to updating the data on the prevalence of the different Sarcocystis spp. in cattle in Italy, highlighting the presence of three Sarcocystis spp., S. cruzi, S. hominis and S. bovifelis, in BEM lesions and allowing us to speculate on the possible role of S. hominis and S. bovifelis as the major sarcosporidian species involved in bovine eosinophilic myositis. Graphic Abstract

scholarly journals The First Lumpy Skin Disease Outbreak in Thailand (2021): Epidemiological Features and Spatio-Temporal Analysis

2022 ◽  
Vol 8 ◽  
Author(s):  
Orapun Arjkumpa ◽  
Minta Suwannaboon ◽  
Manoch Boonrod ◽  
Issara Punyawan ◽  
Supawadee Liangchaisiri ◽  
...  
Keyword(s):  
Skin Disease ◽  
Temporal Analysis ◽  
Space Time ◽  
Effective Control ◽  
Outbreak Response ◽  
Lumpy Skin Disease ◽  
Epidemiological Features ◽  
Spatio Temporal ◽  
Epidemiological Characteristics ◽  
Cattle Farms

The first outbreak of lumpy skin disease (LSD) in Thailand was reported in March 2021, but information on the epidemiological characteristics of the outbreak is very limited. The objectives of this study were to describe the epidemiological features of LSD outbreaks and to identify the outbreak spatio-temporal clusters. The LSD-affected farms located in Roi Et province were investigated by veterinary authorities under the outbreak response program. A designed questionnaire was used to obtain the data. Space-time permutation (STP) and Poisson space-time (Poisson ST) models were used to detect areas of high LSD incidence. The authorities identified 293 LSD outbreak farms located in four different districts during the period of March and the first week of April 2021. The overall morbidity and mortality of the affected cattle were 40.5 and 1.2%, respectively. The STP defined seven statistically significant clusters whereas only one cluster was identified by the Poisson ST model. Most of the clusters (n = 6) from the STP had a radius &lt;7 km, and the number of LSD cases in those clusters varied in range of 3–51. On the other hand, the most likely cluster from the Poisson ST included LSD cases (n = 361) from 198 cattle farms with a radius of 17.07 km. This is the first report to provide an epidemiological overview and determine spatio-temporal clusters of the first LSD outbreak in cattle farms in Thailand. The findings from this study may serve as a baseline information for future epidemiological studies and support authorities to establish effective control programs for LSD in Thailand.

scholarly journals Assessment on Economic Losses due to Animal Health and Production Constraints in Jimma Town Intensive Dairy Farms, Jimma, Ethiopia

2020 ◽  
pp. 52-60
Keyword(s):  
Skin Disease ◽  
Animal Health ◽  
Dairy Farms ◽  
Dairy Farming ◽  
Economic Losses ◽  
Financial Loss ◽  
Lumpy Skin Disease ◽  
Production Constraints ◽  
Milk Fever ◽  
Jimma Town

A single-visit-multiple subject formal survey technique was used to collect data from 75 small-scale dairy farming households which were selected at random and were interviewed using a pre-tested, semi-structured questionnaire. Seventy-three (97.3%) dairy farming was practiced under an intensive management system. Among the selected dairy farms, only (33.3%) were kept in good hygienic condition. Artificial insemination was common (69.3%) breeding system practiced in most dairy farms of studying area. This study discovered that only a few dairy farms (2.7%) undergo periodic vaccination. It appeared from the study that morbidity loss of animals was primarily caused by mastitis which calculated (42.7%), black leg (32%), lumpy skin disease (21.3%), milk fever (17.3%), heart water (10.7%) and foot rote (5.3%) in order of their decreasing order. The results of this survey revealed that mastitis was ranked as the number one disease of dairy animals while foot rote was list reported disease in the study area. Morbidity loss of production and productivity was estimated to the financial loss of (812,600 birrs) per year. Not only morbidity loss, in some farms, mortality was also common problems of the study area. Mainly common diseases such as heart water (6.7%), milk fever (5.3%), back leg (2.7%), and lumpy skin disease (1.7%) were major causes of mortality in few farms. This in turn estimated the financial loss of (625,000 birrs). Eventually, overall annual financial loss as a result of mortality and morbidity was estimated to be (1,437,600 birrs). The outbreak of lumpy skin disease and blacklegs could be controlled through improving veterinary services with respect to adequate vaccination and heart water (seasonal tick infestation) would be alleviated by spraying. The aim of the study was to assess assessment on economic losses due to animal health and production constraints in Jimma town intensive dairy farms, Jimma, Ethiopia.

scholarly journals Mapping changes in the spatiotemporal distribution of lumpy skin disease virus

2019 ◽  
Author(s):  
G. Machado ◽  
F. Korennoy ◽  
J. Alvarez ◽  
C. Picasso-Risso ◽  
A. Perez ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Disease Virus ◽  
Skin Disease ◽  
Spatiotemporal Distribution ◽  
Rapid Expansion ◽  
Disease Spread ◽  
Economic Losses ◽  
Lumpy Skin Disease ◽  
Lumpy Skin Disease Virus ◽  
Increased Risk

SummaryLumpy skin disease virus (LSDV) is an infectious disease of cattle transmitted by arthropod vectors which results in substantial economic losses due to impact on production efficiency and profitability, and represents an emerging threat to international trade of livestock products and live animals. Since 2015, the disease has spread across many Eastern European countries as well as Russia and Kazakhstan. This rapid expansion highlights the emergent nature of the virus in more temperate regions than those in which LSDV traditionally occurred. The goal of this study was to assess the risk for further LSDV spread in Eurasia through a) analysis of environmental factors conducive for LSDV and b) estimate of the underlying LSDV risk using a fine spatiotemporally explicit Bayesian hierarchical model on LSDV outbreak occurrence information. We used ecological niche modeling to estimate the potential distribution of LSDV outbreaks for 2014-2016. This analysis resulted in a spatial representation of environmental limits where, if introduced, LSDV is expected to efficiently spread. The Bayesian space-time model incorporated both environmental factors and the changing spatiotemporal distribution of the disease to capture the dynamics of disease spread and predict areas in which there is an increased risk of LSDV occurrence. Variables related to the average temperature, precipitation, wind speed, as well as land cover and host densities were found to be important drivers explaining the observed distribution of LSDV in both modeling approaches. Areas of elevated LSDV risks were identified mainly in Russia, Turkey, Serbia, and Bulgaria. Results suggest that prevailing ecological conditions may be compatible with further spread of LSDV in Eurasia, though models should be continually updated to reflect the current epidemiologic conditions. The results presented here advance our understanding of the ecological requirements of LSDV in temperate regions and may help in the design and implementation of prevention and surveillance strategies in the region.

scholarly journals Estimating Economic Burden and Factors Perceived to Be Associated With Lumpy Skin Disease in Cattle in Namisindwa District, Eastern Uganda

2020 ◽  
Author(s):  
Isaac Ongom ◽  
Steven Odongo ◽  
Aggrey Siya ◽  
Francis Ejobi
Keyword(s):  
Risk Factors ◽  
Economic Impact ◽  
Skin Disease ◽  
Perceived Risk ◽  
Economic Losses ◽  
P Value ◽  
Power Performance ◽  
Veterinary Services ◽  
Lumpy Skin Disease ◽  
Cattle Herds

Abstract BackgroundGlobally, livestock contributes about 40% of agricultural output sustaining livelihoods and food security of almost a billion people. In Uganda, livestock contributes 5.2% and 12.7% to the total national GDP and agricultural GDP, respectively. In districts like Namisindwa, diseases like Lumpy Skin Disease (LSD) affect the sector undermining its trade and production. Studies on the economic impact and risk factors have not been undertaken in such areas. This study thus sought to unravel information regarding economic impact and perceived risk factors associated with LSD in Namisindwa district. A cross sectional study involving quantitative approaches was employed in this study. Dependent variables were period prevalence and associated economic losses due effect of LSD on cattle herds while independent variable were potential factors influencing spread of the disease among cattle herds. The financial impact assessment was based on the farmers’ calendar year. Results The total economic losses incurred by farmers in Namisindwa district in a single outbreak of LSD was estimated at UGX 574,999,741 (USD 155,405). The most prominent economic loss due to LSD was attributed to low milk yield in lactating cattle as well as poor draught power performance. Other major contributions to economic losses due to LSD after the aforementioned two factors were cost of veterinary services and mortalities of cattle. Economic losses associated with loss of calves, and skin losses were perceived to be the lowest. Introduction of new animals, communal grazing and access to veterinary services were significantly associated with outbreaks of Lumpy Skin Disease. Specifically, farmers with access to veterinary services were less likely to be affected with the rampant spread of the LSD in their cattle, OR = .03361 and P-value < .05. Conclusion There is need for Ministry of Agriculture, Animal Industry and Fisheries in Uganda to advance interventions for prevention and control of LSD in the district. Larger scale and rigorous studies ought to be undertaken also to understand the risk factors and economic impact of LSD outbreaks.

scholarly journals Quantifying and Modeling the Acquisition and Retention of Lumpy Skin Disease Virus by Hematophagus Insects Reveals Clinically but Not Subclinically Affected Cattle Are Promoters of Viral Transmission and Key Targets for Control of Disease Outbreaks

2021 ◽  
Vol 95 (9) ◽  
Author(s):  
Beatriz Sanz-Bernardo ◽  
Ismar R. Haga ◽  
Najith Wijesiriwardana ◽  
Sanjay Basu ◽  
Will Larner ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Disease Virus ◽  
Skin Disease ◽  
Reproduction Number ◽  
Stomoxys Calcitrans ◽  
Effective Control ◽  
Vector Species ◽  
Lumpy Skin Disease ◽  
Lumpy Skin Disease Virus ◽  
Content Type

ABSTRACT Lumpy skin disease virus (LSDV) is a vector-transmitted poxvirus that causes disease in cattle. Vector species involved in LSDV transmission and their ability to acquire and transmit the virus are poorly characterized. Using a highly representative bovine experimental model of lumpy skin disease, we fed four model vector species (Aedes aegypti, Culex quinquefasciatus, Stomoxys calcitrans, and Culicoides nubeculosus) on LSDV-inoculated cattle in order to examine their acquisition and retention of LSDV. Subclinical disease was a more common outcome than clinical disease in the inoculated cattle. Importantly, the probability of vectors acquiring LSDV from a subclinical animal (0.006) was very low compared with that from a clinical animal (0.23), meaning an insect feeding on a subclinical animal was 97% less likely to acquire LSDV than one feeding on a clinical animal. All four potential vector species studied acquired LSDV from the host at a similar rate, 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 this study were combined with data from studies of LSDV transmission and vector life history parameters to determine the basic reproduction number of LSDV in cattle mediated by each of the model species. This reproduction number was highest for Stomoxys calcitrans (19.1), followed by C. nubeculosus (7.1) and Ae. aegypti (2.4), indicating that these three species are potentially efficient transmitters of LSDV; this information can be used to inform LSD control programs. IMPORTANCE Lumpy skin disease virus (LSDV) causes a severe systemic disease characterized by cutaneous nodules in cattle. LSDV is a rapidly emerging pathogen, having spread since 2012 into Europe and Russia and across Asia. The vector-borne nature of LSDV transmission is believed to have promoted this rapid geographic spread of the virus; however, a lack of quantitative evidence about LSDV transmission has hampered effective control of the disease during the current epidemic. Our research shows subclinical cattle play little part in virus transmission relative to clinical cattle and reveals a low probability of virus acquisition by insects at the preclinical stage. We have also calculated the reproductive number of different insect species, therefore identifying efficient transmitters of LSDV. This information is of utmost importance, as it will help to define epidemiological control measures during LSDV epidemics and of particular consequence in resource-poor regions where LSD vaccination may be less than adequate.

scholarly journals Occurrences of Lumpy Skin Disease (LSD) in Cattle in Dinajpur Sadar of Bangladesh

2020 ◽  
Vol 7 (3) ◽  
pp. 445-455
Author(s):  
Sumon Sarkar ◽  
Mirza Mienur Meher ◽  
Mst Misrat Masuma Parvez ◽  
Mahfuza Akther
Keyword(s):  
Skin Disease ◽  
Viral Disease ◽  
Skin Lesions ◽  
Young Female ◽  
Whole Body ◽  
Economic Losses ◽  
Local Breed ◽  
Lumpy Skin Disease ◽  
Herd Level ◽  
Level Information

Lumpy skin disease (LSD) is an acute viral disease infectious of cattle and recently emerged very common in Bangladesh causing economic losses. Hence, this study was design to investigate the prevalence of LSD in considering the herd level and some of management status. Thus, a total of 453 sick animals were subjected to study during the period of April 2020 to July 2020 in Dinajpur. LSD was confirmed according to the clinical inspection and microscopic study of skin scraping. The results indicated that the overall prevalence of LSD was 41.06% in cattle. Moreover, the local breed (75%) and young cattle less than one year (64%) were significantly (p<0.001) higher for LSD with the significant (p<0.001) skin lesions in whole body (44%). In addition, the animal grazed in flock (61%), non-dewormed (58%), non-vaccinated (61%) was significantly (p<0.05) higher for LSD. In the same way, 75% prevalence was in without fly repellent (p<0.001). Afterward, the univariate logistic regression in herd level information had the odd ratio of local breed (95% CI: 0.244-0.553), skin lesions in abdominal regions (95% CI: 1.620-5.923) and pregnant cattle (95% CI: 1.057-3.386) was 0.367, 3.098 and 1.892 respectively indicated the likelihood of no LSD outbreaks. Besides this, the odd ratio of dewormed cattle, vaccinated, individually grazed, regular use of disinfectant and fly repellent farm animal was 1.493 (95% CI:1.024-2.177), 1.491 (95% CI:1.020-2.180), 1.656 (95% CI:1.133-2.421), 1.516 (95% CI:0.952-2.414) and 1.660 (95% CI:1.097-2.513), respectively indicated the likelihood of no LSD. Therefore, LSD infection can be greatly reduced by practicing regular vaccination, deworming, and disinfection, vector controlling and allowing grazing individually, especially with great concern to young female cattle of local breed. Res. Agric., Livest. Fish.7(3): 445-455,  December 2020

scholarly journals Analyzing risk factors for lumpy skin disease by a geographic information system (GIS) in Turkey

2020 ◽  
Vol 70 (4) ◽  
pp. 1797
Author(s):  
O.B. INCE ◽  
T. TÜRK
Keyword(s):  
Risk Factors ◽  
Information System ◽  
Geographic Information System ◽  
Potential Risk ◽  
Skin Disease ◽  
Significant Risk ◽  
Geographic Information ◽  
Morbidity Rate ◽  
Lumpy Skin Disease ◽  
Potential Risk Factors

Lumpy skin disease (LSD) is caused by the virus of the same name and has major economic impacts on cattle breeding. In Turkey, frequent cases of cattle LSD have been reported over the last years. The present study aimed to analyze potential risk factors for LSD and provide information for controlling the spread of infectious diseases by a geographic information system (GIS). The research included cross-sectional and retrospective studies with active disease follow-up and semi-structured interviews (SSI) from August 2013 to December 2014 in Turkey. Potential risk factors for LSD were evaluated based on environmental conditions and provincial demographic and epidemiological data. Of the total of 562 observed animals, 27.22% and 2.67% of cattle were sick and died due to LSD, respectively. The morbidity rate was 26.04% in mixed and 38.18% in local breeds. The animal-level prevalence significantly differed among animals of different age, sex, and with different vaccination status (P<0.05). It was more serious in younger animals and females and during drier weather conditions. A trend of seasonality was observed in LSD occurrence. Significant risk factors affecting the prevalence of LSD were proximity to the southern border of Turkey, animal movements, and animal markets. In this process, geographical query, analysis, and thematic map production were performed by GIS.

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