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Byadovskaya O, Shalina K, Prutnikov P, Shumilova I, Tenitilov N, Konstantinov A, Moroz N, Chvala I, Sprygin A. The Live Attenuated Vaccine Strain "ARRIAH" Completely Protects Goats from a Virulent Lineage IV Field Strain of Peste Des Petits Ruminants Virus. Vaccines (Basel) 2024; 12:110. [PMID: 38400094 PMCID: PMC10892433 DOI: 10.3390/vaccines12020110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/27/2023] [Accepted: 01/16/2024] [Indexed: 02/25/2024] Open
Abstract
Peste des petits ruminants (PPR) is a transboundary viral disease that affects small ruminants, such as goats and sheep, in Africa, the Middle East, and Asia, causing substantial damage to livelihoods and disrupting livestock trade. Although Russia is PPR virus (PPRV)-free, controlling PPRV in neighboring countries is the top national priority. Recent PPR outbreaks in Mongolia and other countries in the Middle East caused by a lineage IV virus represent a risk of transboundary emergence in neighboring countries, including China, Kazakhstan, and Russia. In the present study, we assessed the potency and safety of the ARRIAH live attenuated PPRV vaccine (lineage II) in Zaannen and Nubian goat breeds by challenging them with a virulent lineage IV Mongolia/2021 isolate. For comparison, two commercial vaccines of Nigeria75/1 strain were used. The ARRIAH-vaccinated animals showed an increase in body temperature of 1-1.5 °C above the physiological norm, similar to the animals vaccinated with Nigeria75/1 vaccines. In all vaccinated groups, the average rectal temperature never exceeded 39.4-39.7 °C throughout the infection period, and no clinical signs of the disease were observed, demonstrating vaccine efficacy and safety in the current experimental setting. However, the control group (mock vaccinated) challenged with Mongolia/2021 PPRV exhibited moderate-to-severe clinical signs. Overall, the findings of the present study demonstrate that the ARRIAH vaccine strain has a promising protective phenotype compared with Nigeria75/1 vaccines, suggesting its potential as an effective alternative for curbing and controlling PPR in affected countries. Although the ARRIAH vaccine against PPR is not currently endorsed by the World Organization for Animal Health due to its incomplete safety and potency profile, this study is the first step to provide experimentally validated data on the ARRIAH vaccine.
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Lugonzo G, Gitao G, Bebora L, Lutta HO. Seroprevalence of Peste des Petits Ruminants and Contagious Caprine Pleuropneumonia Coinfections in Goats in Kwale County, Kenya. Vet Med Int 2023; 2023:5513916. [PMID: 37485298 PMCID: PMC10361832 DOI: 10.1155/2023/5513916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 06/06/2023] [Accepted: 06/14/2023] [Indexed: 07/25/2023] Open
Abstract
Goats are among the most important small ruminants affected by Peste des Petits ruminants (PPR) and contagious caprine pleuropneumonia (CCPP) diseases, two of the most significant constraints worldwide to the production of small ruminant species. Herein, the competitive enzyme-linked immunosorbent assay (cELISA) and the latex agglutination test (LAT) were used to determine the coinfections of PPR and CCPP in goats in Kwale County on Kenya's South Coast. A total of 368 serum samples were collected from goats of various ages and sexes exhibiting respiratory distress in the four subcounties of Kwale County (Kinango, Lunga Lunga, Matuga, and Msambweni) and screened for PPR and CCPP antibodies. Of the 368 goats sampled, 259 (70.4%) were females and 109 (29.6%) were males, and 126 (34.2%), 71 (19.3%), 108 (29.3%), and 63 (17.1%) samples were collected from Kinango, Matuga, Lunga Lunga, and Msambweni, respectively. The overall PPR seropositivity rate was 48.6% (179/368); rates in Kinango, Lunga Lunga, Matuga, and Msambweni were 70.6%, 29.6%, 49.3%, and 36.5%, respectively. The overall CCPP seropositivity rate was 45.4% (167/368), while rates in Kinango, Lunga Lunga, Matuga, and Msambweni were 51.6%, 49.1%, 36.6%, and 36.5%, respectively. Notably, the seropositivity of PPR was higher in male (53.3%) than in female (46.72%) goats, though not statistically significant. In addition, the CCPP seropositivity rates were not significantly different between male (44.0%) and female (45.9%) goats. Regarding age, the PPR seropositivity rates were 45.9%, 55.8%, and 52.3% in adults, kids, and weaners, respectively. For CCPP, the seropositivity rates were 48.3%, 40.4%, and 42.3% in adults, kids, and weaners, respectively. The coinfection rate of PPR and CCPP was 22.3% (82/368). Despite the high coinfection, univariate analysis revealed no relationship between PPR and CCPP infections. However, given the high PPR and CCPP infection rates, as a result of separate or coinfection, there is a need to upscale or intensify vaccination in the county.
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Affiliation(s)
- George Lugonzo
- Kenya Agricultural and Livestock Research Organization, Biotechnology Research Institute, P.O. Box 14733-00800, Nairobi, Kenya
| | - George Gitao
- University of Nairobi, Department of Veterinary Pathology, Microbiology and Parasitology, Nairobi, Kenya
| | - Lilly Bebora
- University of Nairobi, Department of Veterinary Pathology, Microbiology and Parasitology, Nairobi, Kenya
| | - Harrison Osundwa Lutta
- Kenya Agricultural and Livestock Research Organization, Biotechnology Research Institute, P.O. Box 14733-00800, Nairobi, Kenya
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Molecular Epidemiology and Phylogenetic Analysis of Peste des Petits Ruminants Virus Circulating in Sheep in Bangladesh. Transbound Emerg Dis 2023. [DOI: 10.1155/2023/1175689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Peste des petits ruminants (PPR) is a viral disease of small ruminants that is highly contagious, severe, reportable, and economically important. The present study was conducted to detect the PPR virus (PPRV) circulating in sheep in Bangladesh to determine its association with epidemiological risk factors and the degree of relationship between the F and H genes of the PPRV of sheep with those of other sheep and goat isolates. A cross-sectional study was conducted in five selected districts of Bangladesh to collect data on locations, ecological zones, breeds, age, sex, sources, time period, and farming systems using a structured questionnaire accompanied by face-to-face interviews. During sampling, 250 nasal swab samples were collected from live sheep with the typical clinical signs of PPR. Thereafter, a reverse-transcriptase polymerase chain reaction (RT-PCR) assay was employed to detect PPRV using the F and H genes. Risk factors were determined using bivariable and multivariable logistic regression analyses. Phylogenetic analysis of the detected PPRV was performed using MEGA software after sequencing both F and H genes. Using RT-PCR, 35.6% (89/250, 95% CI: 29.6%–41.6%) of the samples were found to be positive for PPRV. Locations, breeds, sources, and feeding systems were identified as potential molecular epidemiological risk factors for PPRV infection in a multivariate logistic regression model. Nucleotide sequencing and phylogenetic analysis showed that the PPRV strain was genetically related to the lineage IV virus isolates. For the F gene, the sequence divergence of our gene and other selected genes ranged from 0.01% to 0.018% within lineage IV, and the similarity ranged from 98.2% to 99.0%. In the case of the H gene, similar results were also observed in divergence, ranging from 0.017% to 0.083% among lineage IV and others, and similarity varied from 91.7% to 98.3%. To the best of our knowledge, this is the first study in Bangladesh conducted to determine the RT-PCR-based molecular epidemiology of PPRV in sheep. This study highlights the importance of establishing successful interventions for managing PPRV infections in small ruminants in Bangladesh.
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Rahman MM, Sabuj AAM, Islam MS, Islam MA, Alam J, Ershaduzzaman M, Saha S. Serological study and risk factor analysis on Peste des Petits Ruminants in sheep in Bangladesh. Saudi J Biol Sci 2023; 30:103565. [PMID: 36794045 PMCID: PMC9923225 DOI: 10.1016/j.sjbs.2023.103565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 12/18/2022] [Accepted: 01/17/2023] [Indexed: 01/24/2023] Open
Abstract
A cross-sectional study was conducted to determine the seroprevalence of the Peste des Petits Ruminant (PPR) virus (PPRV) in sheep populations and to determine the potential epidemiological risk factors associated with this infection. Between October 2014 and March 2017, 2420 sheep serum samples were collected from ten selected PPR outbreak-prone districts in Bangladesh. The collected sera were analysed by competitive enzyme-linked immunosorbent assay (cELISA) test to detect antibodies against PPR. A previously designed disease report form was used to gather data on important epidemiological risk factors, and a risk analysis was performed to ascertain their association with PPRV infection. By cELISA, 44.3 % (95 % confidence interval:42.4-46.4 %) of sheep sera were positive for PPRV antibodies against PPR. In univariate analysis, the Bagerhat district had significantly higher seropositivity (54.1 %, 156/288) than other districts. Moreover, significantly higher (p < 0.05) seropositivity was found in the Jamuna River Basin (49.1 %, 217/442) compared to other ecological zones, in crossbreeds (60 %; 600/1000) related to native sheep, in males (69.8 %, 289/414) associated with females, in imported sheep (74.3 %, 223/300) compared to other sources, and in winter (57.2 %, 527/920) than in other seasons. In the multivariate logistic regression model, six possible risk factors were identified: study location, ecological zone, breed, sex, source, and season. The high seroprevalence of PPRV is significantly associated with several risk factors, suggesting that PPR is epizootic throughout the country.
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Affiliation(s)
- Mohammad Mojibur Rahman
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh,Bangladesh Civil Service Livestock Academy, Savar, Dhaka 1349, Bangladesh
| | - Abdullah Al Momen Sabuj
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Md. Saiful Islam
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Md. Alimul Islam
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Jahangir Alam
- Animal Biotechnology Division, National Institute of Biotechnology, Ganakbari, Ashulia, Savar, Dhaka 1349, Bangladesh
| | - Md. Ershaduzzaman
- Krishi Gobeshona Foundation, Bangladesh Agricultural Research Council, Farmgate, Dhaka 1215, Bangladesh
| | - Sukumar Saha
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh,Corresponding author at: Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
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Molecular detection of mixed infection with peste des petits ruminants and retroviruses in Egyptian sheep and goats. Trop Anim Health Prod 2023; 55:102. [PMID: 36849557 DOI: 10.1007/s11250-023-03504-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 02/11/2023] [Indexed: 03/01/2023]
Abstract
Peste des petits ruminants (PPR) is a contagious viral disease causing massive economic loss to animal industries in endemic countries including Egypt. Although a vaccine is available, coinfections can overwhelm the animal immune system and interfere with vaccine protection. Small ruminant retrovirus (SRR), including enzootic nasal tumor virus (ENTV) and Jaagsiekte sheep retrovirus (JSRV), is responsible for coinfections with PPR. Investigation of clinical cases in this study confirmed the presence of PPR virus by RT-PCR among four flocks. Sequence of five PPR amplicons revealed that all strains had 100% aa similarity and belonged to lineage IV. In addition, these strains had 98-99% nt similarity with all previous Egyptian and African strains from Sudan (MK371449) and Ethiopia (MK371449). Illumina sequencing of a representative sample showed a genome of 5753 nt compatible with ENT-2 virus with 98.42% similarity with the Chinese strain (MN564750.1). Four ORFs representing gag, pro, pol, and env genes were identified and annotated. Pro gene was highly stable while gag, pol, and env showed eight, two, and three aa differences with the reference strains. Sanger sequencing revealed that two amplicons were ENT-2 virus, and one was JSRV. ENT-2 sequences had 100% similarity with KU258870 and KU258871 reference strains while JSRV was 100% similar to the EF68031 reference strain. The phylogenetic tree showed a close relationship between the ENT of goats and the JSRV of sheep. This study highlights the complexity of PPR molecular epidemiology, with SRR that was not molecularly characterized previously in Egypt.
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Islam S, Rahman MK, Abedin J, Zamil S, Sayeed MA, Rahman MZ, Islam A. Serological evidence of bluetongue virus and associated factors in small ruminants of Bangladesh. Prev Vet Med 2023; 211:105821. [PMID: 36584566 DOI: 10.1016/j.prevetmed.2022.105821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 12/12/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022]
Abstract
Bluetongue (BT) is an infectious, vector-borne viral disease of animals having a substantial economic impact and it is endemic in the bordering states of the Indian subcontinent. Livestock enters frequently from India into Bangladesh without any screening. Hence, this study aimed to estimate the seroprevalence of Bluetongue virus (BTV) and associated risk factors in small ruminants of Bangladesh. We conducted a cross-sectional study in the Dhaka, Chattogram, and Faridpur districts of Bangladesh between 2017 and 2018. The team collected 333 serum samples from 123 goats and 210 sheep and tested them for the presence of antibodies against BTV using a competitive enzyme linked immunosorbent assay (c-ELISA). A mixed multivariable logistic regression model was built to identify risk factors. Sample collection location was included as a random effect and husbandry and demographic variables as fixed effects to identify the potential risk factors. The BTV seroprevalence was found to be 55.3% (n = 184; 95% CI: 49.74-60.68). In the mixed-effect logistic regression analysis, animal species (AOR: 4.69; 95% CI: 2.49-8.82; p = 0.001) and vector control measurement (AOR: 9.01; 95% CI: 4.01-20.00; p = 0.0001) were significantly associated with BTV seropositivity. However, no significant association was found in multivariable mixed-effect logistic regression for the variables age, body condition score (BCS), vaccination against PPR (p > 0.05). The study found evidence of high seroprevalence of BTV in both sheep and goats in different districts of Bangladesh, indicating natural exposure of the virus and the animals can serve as a potential threat for other animals. Further research is needed to isolate and identify the circulating virus serotype(s) of BTV in Bangladesh as well as longitudinal studies for epidemiological investigations to formulate sound control programs and to enhance the awareness about the possible impacts of this disease on the livelihood of the people.
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Affiliation(s)
- Shariful Islam
- Institute of Epidemiology, Disease Control and Research (IEDCR), Mohakhali, Dhaka 1212, Bangladesh; EcoHealth Alliance, New York, NY 10018, USA.
| | - Md Kaisar Rahman
- Institute of Epidemiology, Disease Control and Research (IEDCR), Mohakhali, Dhaka 1212, Bangladesh; EcoHealth Alliance, New York, NY 10018, USA.
| | - Josefina Abedin
- Institute of Epidemiology, Disease Control and Research (IEDCR), Mohakhali, Dhaka 1212, Bangladesh; EcoHealth Alliance, New York, NY 10018, USA.
| | - Shafayat Zamil
- Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Chattogram 4225, Bangladesh.
| | - Md Abu Sayeed
- Institute of Epidemiology, Disease Control and Research (IEDCR), Mohakhali, Dhaka 1212, Bangladesh; EcoHealth Alliance, New York, NY 10018, USA.
| | - Mohammed Ziaur Rahman
- International Centre for Diarrheal Diseases Research, Bangladesh (icddr,b), Bangladesh.
| | - Ariful Islam
- Institute of Epidemiology, Disease Control and Research (IEDCR), Mohakhali, Dhaka 1212, Bangladesh; EcoHealth Alliance, New York, NY 10018, USA; Centre for Integrative Ecology, School of Life and Environmental Science, Deakin University, Australia.
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Munmun TK, Islam S, Zamil S, Rahman MA, Abedin J, Ahad A, Islam A. Seroprevalence and risk factors of bluetongue virus in sheep of Chattogram, Bangladesh. Vet World 2022; 15:1589-1594. [PMID: 35993077 PMCID: PMC9375224 DOI: 10.14202/vetworld.2022.1589-1594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 05/20/2022] [Indexed: 11/16/2022] Open
Abstract
Background and Aim: Bluetongue (BT) is a non-contagious, infectious disease of wild and domestic ruminant animals caused by the BT virus (BTV). Bangladesh having a border with a BTV-endemic country, India and a substantial number of susceptible animals. Therefore, this study aimed to estimate BTV seroprevalence and potential risk factors. Materials and Methods: We collected 150 serum samples from indigenous sheep from Chattogram, Bangladesh. We screened the serum samples using a competitive enzyme-linked immunosorbent assay for detecting BTV-specific immunoglobulin. Results: We detected antibodies against BTV in 39.3% (59/150; 95% confidence interval: 31.5–47.6) of all sampled sheep. Factors like sampling site, sheep rearing location, rearing sheep with other farm species, and body condition score had a significant (p < 0.05) influence on the seroprevalence of BTV. Conclusion: The findings show that indigenous sheep have a higher BTV seroprevalence, necessitating sustained surveillance for early diagnosis and a better understanding of virus epidemiology in Bangladesh.
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Affiliation(s)
- Tahura Khanam Munmun
- Department of Microbiology and Veterinary Public Health, Chattogram Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chattogram-4225, Bangladesh
| | - Shariful Islam
- Institute of Epidemiology, Disease Control, and Research, Mohakhali, Dhaka-1212, Bangladesh; EcoHealth Alliance, New York, NY, USA
| | - Shafayat Zamil
- Department of Microbiology and Veterinary Public Health, Chattogram Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chattogram-4225, Bangladesh
| | - Md. Ashiqur Rahman
- Department of Microbiology and Veterinary Public Health, Chattogram Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chattogram-4225, Bangladesh
| | - Josefina Abedin
- Institute of Epidemiology, Disease Control, and Research, Mohakhali, Dhaka-1212, Bangladesh; EcoHealth Alliance, New York, NY, USA
| | - Abdul Ahad
- Department of Microbiology and Veterinary Public Health, Chattogram Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chattogram-4225, Bangladesh
| | - Ariful Islam
- EcoHealth Alliance, New York, NY, USA; Centre for Integrative Ecology, School of Life and Environmental Science, Deakin University, Victoria, Australia
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Nooruzzaman M, Akter MN, Begum JA, Begum S, Parvin R, Giasuddin M, Islam MR, Lamien CE, Cattoli G, Dundon WG, Chowdhury EH. Molecular insights into peste des petits ruminants virus identified in Bangladesh between 2008 and 2020. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2021; 96:105163. [PMID: 34848354 DOI: 10.1016/j.meegid.2021.105163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 06/13/2023]
Abstract
An in-depth knowledge of the molecular evolution of the peste des petits ruminants virus (PPRV) is critical for the success of the current global eradication program. For this reason, a molecular evolutionary analysis of PPRVs circulating in Bangladesh over a decade (2008-2020) was performed. The complete genome sequencing of three PPRV isolates from 2008 (BD2), 2015 (BD12) and 2017 (BD17) as well as full length nucleocapsid (N), matrix (M) and fusion (F) gene sequencing of seven more samples from 2015 to 2020 was performed. Phylogenetic analysis classified all ten PPRVs from Bangladesh as members of lineage IV and showed that they were closely related to PPRV strains detected in China and Tibet during 2007-2008, and India during 2014-2018. Time scale Bayesian Maximum Clade Credibility (MCC) phylogenetic analysis of the three complete genomes revealed a mean Time to Most Recent Common Ancestor (TMRCA) of 2000. Comparative deduced amino acid residue analysis at various functional motifs of PPRVs related to virus structure and function, virulence and host adaptation, receptor binding sites and polymerase activity revealed conserved residues among the PPRVs from Bangladesh. In total sixteen epitopes were predicted from four immunogenic proteins i.e. N, M, F and haemagglutinin (H). Interestingly, the predicted epitopes from the N and M proteins shared conserved epitopes with two vaccine strains currently being used, indicating that the strains from Bangladesh could be potentially used as alternative local vaccines.
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Affiliation(s)
- Mohammed Nooruzzaman
- Department of Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Mst Nazia Akter
- Department of Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Jahan Ara Begum
- Department of Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Shahana Begum
- Department of Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh; Department of Physiology, Faculty of Veterinary, Animal & Biomedical Sciences, Sylhet Agricultural University, Sylhet 3100, Bangladesh
| | - Rokshana Parvin
- Department of Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Md Giasuddin
- Animal Health Division, Bangladesh Livestock Research Institute, Savar, Dhaka, Bangladesh
| | - Mohammad Rafiqul Islam
- Department of Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Charles E Lamien
- Animal Production and Health Laboratory, Joint FAO/IAEA Division, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna, Austria
| | - Giovanni Cattoli
- Animal Production and Health Laboratory, Joint FAO/IAEA Division, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna, Austria
| | - William G Dundon
- Animal Production and Health Laboratory, Joint FAO/IAEA Division, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna, Austria
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Sultana S, Sultana N, Islam M, Pervin M, Khan MAI, Noor Ali Khan MAH. Zoonotic diseases appeared to be a major hurdle to successful deer farming in Bangladesh. Vet World 2021; 14:2462-2472. [PMID: 34840467 PMCID: PMC8613778 DOI: 10.14202/vetworld.2021.2462-2472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 08/03/2021] [Indexed: 11/16/2022] Open
Abstract
Background and Aim Due to the diversified lifestyle and fancy ecology associated with Chitra deer (Axis axis), deer farming has become popular in Bangladesh. Diseases may be the common constrain of successful deer farming. This study aims to investigate the pathological, bacteriological, and nucleic acid based technologies to identify specific causes of morbidity and mortality of captive deer. Materials and Methods Two deer farms and a park deer (designated as farm A, B, and C) entailing 87, 54, and 20 deer, respectively, showed illness and death constitute the study materials. A total of 42 deer died during this investigation. Following death, routine post-mortem examination, histopathology, impression smear staining, isolation, and identification of bacteria were carried out. Polymerase chain reaction (PCR) and reverse transcription PCR were carried out to safeguard the etiology. Results Clinically, farm A and B showed the acute phase of illness and park deer showed chronic illness. Case fatality rates were 90%, 92%, and 100% in farms A, B, and C deer, respectively. Pasteurella multocida and Streptococcus pneumoniae were identified from the visceral organs of farm A deer. Farm B deer was infected with Clostridium perfringens type A. Park deer was infected with Mycobacterium tuberculosis and hydatid cyst. Conclusion The infectivity in farm A deer was due to stress as induced by punishing weather. The infectivity in farm B deer was due to feeding a higher volume of protein in the diet. The park C deer may optate infection from companion man and animals living around. The diseases of captive deer identified mainly were zoonotic. It needs extensive veterinary services and specialized technologies to identify these diseases, monitor the infectivity and eliminate the public health important diseases at early onset.
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Affiliation(s)
- Sajeda Sultana
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.,Department of Pathology, Faculty of Animal Science and Veterinary Medicine, Sher-E-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka 1207, Bangladesh
| | - Nazneen Sultana
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
| | - Mahmuda Islam
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
| | - Munmun Pervin
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
| | - Md Ariful Islam Khan
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
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Review of Peste des Petits Ruminants Occurrence and Spread in Tanzania. Animals (Basel) 2021; 11:ani11061698. [PMID: 34200290 PMCID: PMC8230322 DOI: 10.3390/ani11061698] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/20/2021] [Accepted: 05/28/2021] [Indexed: 12/15/2022] Open
Abstract
Simple Summary Peste des petits ruminants (PPR), caused by PPR virus (PPRV), is a transboundary animal disease of sheep and goats that has a significant impact on farmer’s livelihoods, food and nutritional security; and threatens susceptible wildlife. This review compiled information on the introduction and spread of PPR in Tanzania, from published and unpublished sources. PPR was first confirmed in Tanzania in 2008, but could have been present earlier, based on antibody detection in archived sera. The virus was probably introduced to northern Tanzania through cross-border movement of sheep and goats, and afterwards spread to eastern, central and southern Tanzania through movement of animals by pastoralists and traders. Genome sequencing shows that there have been several introductions of PPRV and it is now considered to be endemic. PPR has not been observed in cattle, camels or wildlife, but sera collected from these species contain PPRV antibodies, indicating virus exposure, probably through contact with infected sheep and goats. Some challenges for PPR control in Tanzania include the spread of the disease through small ruminants movements for pastoralism and trade, and limited veterinary services for disease surveillance and vaccination. The socio-economic impact of PPR justifies investment in a comprehensive disease eradication programme. Abstract Peste des petits ruminants (PPR) is an important transboundary animal disease of domestic small ruminants, camels, and wild artiodactyls. The disease has significant socio-economic impact on communities that depend on livestock for their livelihood and is a threat to endangered susceptible wild species. The aim of this review was to describe the introduction of PPR to Tanzania and its subsequent spread to different parts of the country. On-line databases were searched for peer-reviewed and grey literature, formal and informal reports were obtained from Tanzanian Zonal Veterinary Investigation Centres and Laboratories, and Veterinary Officers involved with PPR surveillance were contacted. PPR virus (PPRV) was confirmed in northern Tanzania in 2008, although serological data from samples collected in the region in 1998 and 2004, and evidence that the virus was already circulating in Uganda in 2003, suggests that PPRV might have been present earlier than this. It is likely that the virus which became established in Tanzania was introduced from Kenya between 2006–7 through the cross-border movement of small ruminants for trade or grazing resources, and then spread to eastern, central, and southern Tanzania from 2008 to 2010 through movement of small ruminants by pastoralists and traders. There was no evidence of PPRV sero-conversion in wildlife based on sera collected up to 2012, suggesting that they did not play a vectoring or bridging role in the establishment of PPRV in Tanzania. PPRV lineages II, III and IV have been detected, indicating that there have been several virus introductions. PPRV is now considered to be endemic in sheep and goats in Tanzania, but there has been no evidence of PPR clinical disease in wildlife species in Tanzania, although serum samples collected in 2014 from several wild ruminant species were PPRV sero-positive. Similarly, no PPR disease has been observed in cattle and camels. In these atypical hosts, serological evidence indicates exposure to PPRV infection, most likely through spillover from infected sheep and goats. Some of the challenges for PPRV eradication in Tanzania include movements of small ruminants, including transboundary movements, and the capacity of veterinary services for disease surveillance and vaccination. Using wildlife and atypical domestic hosts for PPR surveillance is a useful indicator of endemism and the ongoing circulation of PPRV in livestock, especially during the implementation of vaccination to control or eliminate the disease in sheep and goats. PPR disease has a major socio-economic impact in Tanzania, which justifies the investment in a comprehensive PPRV eradication programme.
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Begum S, Nooruzzaman M, Islam MR, Chowdhury EH. A Sequential Study on the Pathology of Peste Des Petits Ruminants and Tissue Distribution of the Virus Following Experimental Infection of Black Bengal Goats. Front Vet Sci 2021; 8:635671. [PMID: 33681333 PMCID: PMC7933573 DOI: 10.3389/fvets.2021.635671] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/29/2021] [Indexed: 12/15/2022] Open
Abstract
We studied the sequential pathology of peste des petits ruminants (PPR) in Black Bengal goats and analyzed virus distribution in tissues and virus shedding following experimental infection with a Bangladeshi isolate of lineage IV PPR virus (PPRV). The early clinical signs like fever, depression, and ocular and nasal discharges first appeared at 4-7 days post-infection (dpi). Three out of eight inoculated goats died at 13, 15, and 18 dpi, and the rest were killed at different time points from 5 to 18 dpi. Initially, the virus multiplied mostly in the lymphoid organs of the pharyngeal region and caused extensive lymphoid destruction and hemorrhages. This was followed by viremia, massive virus replication in the lungs, and pneumonia along with the appearance of the clinical signs. Subsequently, the virus spread to other organs causing necrotic and hemorrhagic lesions, as well as the virus localized in the upper respiratory, oral and intestinal mucosa resulting in catarrhal, erosive, and ulcerative lesions. On hematological and biochemical investigation progressive leukopenia and hypoproteinemia, a gradual increase of serum metabolites and enzymes associated with liver and kidney damage, and electrolyte imbalance were observed. Seroconversion started at 7 dpi and all the surviving animals had serum antibodies at 14 dpi. Virus shedding was observed in nasal and ocular secretions at 4 dpi and in feces and urine at 14 dpi, which gradually increased and continued till the end of the experiment (18 dpi) despite seroconversion. Therefore, the virus shedding of naturally infected seroconverted goats should be monitored for effective control strategies.
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Affiliation(s)
- Shahana Begum
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Mohammed Nooruzzaman
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Mohammad Rafiqul Islam
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Emdadul Haque Chowdhury
- Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
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Rahman AKMA, Islam SS, Sufian MA, Talukder MH, Ward MP, Martínez-López B. Peste des Petits Ruminants Risk Factors and Space-Time Clusters in Bangladesh. Front Vet Sci 2021; 7:572432. [PMID: 33569395 PMCID: PMC7868412 DOI: 10.3389/fvets.2020.572432] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 12/14/2020] [Indexed: 11/13/2022] Open
Abstract
Peste des Petits Ruminants (PPR) is endemic in Bangladesh, but its spatial distribution and risk factors have not yet been reported. Using four years of national-level, passive surveillance data (2014 to 2017), in this study we aimed to identify risk factors, create PPR risk maps and describe PPR time-space clusters. We selected PPR case records—mainly based on presumptive diagnosis of small ruminants in subdistrict veterinary hospitals—and sheep and goat population data from all 64 districts of Bangladesh. Peste des Petits Ruminants cumulative incidence per 10,000 animals at risk per district was used to conduct cluster and hotspot analysis and create predictive maps for each year and all 4 years combined. The association between PPR cumulative incidence and hypothesized risk factors—including climatic variables, elevation, road length, river length, railroad length, land cover, and water bodies—was analyzed using a geographically weighted regression model. The total number of PPR cases reported during the study period was 5.2 million. We found that most PPR cases (27.6%) were reported in the monsoon season. The highest and lowest proportions of cases were reported from Rajshahi (36.1%) and Barisal divisions (2.1%), respectively. We identified five space-time clusters, 9 high–high clusters, and 9 hotspots. The predicted cumulative incidences of PPR were persistently higher in north-east, north-west, and south-east parts of Bangladesh. Road length (P = 0.03) was positively associated with PPR incidence in Bangladesh. Results suggest that movement of animals (road length) plays an important role in the epidemiology of PPR in Bangladesh. Along with restriction of animal movement, hotspots and high–high clusters should be targeted first for immunization coverage in Bangladesh and similar PPR endemic countries to achieve eradication.
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Affiliation(s)
- A K M Anisur Rahman
- Department of Medicine, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Sk Shaheenur Islam
- Department of Livestock Services, Krishi Khamar Sarak, Dhaka, Bangladesh
| | - Md Abu Sufian
- Department of Livestock Services, Krishi Khamar Sarak, Dhaka, Bangladesh
| | | | - Michael P Ward
- Sydney School of Veterinary Science, The University of Sydney, Camden, NSW, Australia
| | - Beatriz Martínez-López
- Department of Medicine and Epidemiology, Center for Animal Disease Modeling and Surveillance, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
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Ahaduzzaman M. Peste des petits ruminants (PPR) in Africa and Asia: A systematic review and meta-analysis of the prevalence in sheep and goats between 1969 and 2018. Vet Med Sci 2020; 6:813-833. [PMID: 32529792 PMCID: PMC7738735 DOI: 10.1002/vms3.300] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 04/13/2020] [Accepted: 05/22/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Peste des petits ruminants (PPR) is a prevalent viral disease of sheep and goats that impacts productivity and international animal trade. Despite the substantial economic consequences related to PPR, little is known about the prevalence of this disease at the broad geographical levels. OBJECTIVE The present study aimed to use a systematic approach to assess the regional prevalence of PPR in sheep and goats, and the associated factors that contribute to prevalence estimates. METHODS Published articles on PPR in sheep and goats were searched in PubMed, Web of Science, Scopus, Google Scholar and the reference lists of articles reporting the prevalence from 1 January 1969 to 31 December 2018. Articles were selected using inclusion and exclusion criteria. Since the heterogeneity among the studies was significant, pooled prevalences were estimated by a random effect meta-analysis model. RESULTS Data on the prevalence of PPR were obtained from Africa and Asia, where the pooled prevalence estimates were 40.99% (95% CI: 37.20%-44.79%) and 38.43% (95% CI: 35.64%-41.22%) respectively. Overall, the estimated pooled prevalence at Africa-Asia level in sheep was 39.31% (95% CI: 35.75%-42.88%) and in goats was 39.57% (95% CI: 36.66%-42.48%). Significant heterogeneity (I2 > 80%) was noted in most pooled estimates. CONCLUSION The results on the regional prevalence estimates of PPR presented here will be useful in raising awareness and advocating for Governments to engage in initiatives to eradicate PPR and prevent it from spreading to other continents.
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Affiliation(s)
- Md Ahaduzzaman
- Department of Medicine & Surgery, Chattogram Veterinary & Animal Sciences University (CVASU), Chattogram, Bangladesh
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Jia XX, Wang H, Liu Y, Meng DM, Fan ZC. Development of vaccines for prevention of peste-des-petits-ruminants virus infection. Microb Pathog 2020; 142:104045. [PMID: 32035105 DOI: 10.1016/j.micpath.2020.104045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 01/09/2020] [Accepted: 02/05/2020] [Indexed: 01/22/2023]
Abstract
Peste des petits ruminants (PPR) is a highly contagious and fatal disease of small ruminants, particularly sheep and goats. This disease leads to high morbidity and mortality of small ruminants, thus resulting in devastating economic loss to the livestock industry globally. The severe disease impact has prompted the Food and Agriculture Organization of the United Nations (FAO) and the World Organization for Animal Health (OIE) to develop a global strategy for the control and eradication of PPR by 2030. Over the past decades, the control of PPR is mainly achieved through vaccinating the animals with live-attenuated vaccines, e.g., rinderpest vaccines. As a closely related disease to PPR of large ruminants, rinderpest was eradicated in 2011 and its vaccines subsequently got banned in order to keep rinderpest-free zones. Consequently, it is desirable to develop homologous PPR vaccines to control the disease. The present review summarizes the objectives of PPR control and eradication by focusing on the homologous PPR vaccines.
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Affiliation(s)
- Xue-Xia Jia
- State Key Laboratory of Food Nutrition and Safety, Institute of Health Biotechnology, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Hui Wang
- State Key Laboratory of Food Nutrition and Safety, Institute of Health Biotechnology, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Ying Liu
- State Key Laboratory of Food Nutrition and Safety, Institute of Health Biotechnology, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China; College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - De-Mei Meng
- State Key Laboratory of Food Nutrition and Safety, Institute of Health Biotechnology, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Zhen-Chuan Fan
- State Key Laboratory of Food Nutrition and Safety, Institute of Health Biotechnology, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China.
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Hossain MB, Rahman MS, Watson OJ, Islam A, Rahman S, Hasan R, Kafi MAH, Osmani MG, Epstein JH, Daszak P, Haider N. Epidemiology and genotypes of group A rotaviruses in cattle and goats of Bangladesh, 2009-2010. INFECTION GENETICS AND EVOLUTION 2020; 79:104170. [PMID: 31904556 DOI: 10.1016/j.meegid.2020.104170] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 12/26/2019] [Accepted: 01/01/2020] [Indexed: 10/25/2022]
Abstract
Group A rotavirus (RVA) is recognized as a major cause of severe gastroenteritis in newborn calves and goat kids. We estimated the proportion of ruminants infected with rotavirus and identified the circulating genotypes in cattle and goats in Bangladesh. Between May 2009 and August 2010, fecal samples were collected from 520 cattle and goats presenting with diarrhea at three government veterinary hospitals in three districts of Bangladesh. All samples were screened for RVA RNA using real-time, one-step, reverse transcription polymerase chain reaction (qRT-PCR). Of the 520 animals tested, 11.7% (61) were positive for RVA RNA, with 6.2% (15/241) and 16.5% (46/279) positivity in cattle and goats, respectively. RVA positive samples were further characterized by nucleotide sequence analysis of two structural protein gene fragments, VP7 (G genotype), and VP4 (P genotype). Among 17 successfully sequenced strains, G8 (17.9%) was the most prevalent G-genotype followed by G10 (8%) and G6 (1.6%). P[1] (11.3%) was the most frequently detected P-genotype followed by P[11] (3.2%) and P[15] (1.6%). The most common VP7/VP4 combinations for cattle were G10P[11], G10P[15], and G6P[11], and for goat, G8P[1], and G10P[1]. Phylogenetic analysis of the RVA strains showed clustering with bovine and caprine strains from neighboring India. The study adds to our understanding of the genetic diversity of bovine and caprine rotavirus strains in Bangladesh. Our findings highlight the importance of rotavirus surveillance in cattle and goat populations, which may serve as a potential source for genetic reassortment and zoonotic transmission.
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Affiliation(s)
| | | | - Oliver J Watson
- MRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, Imperial College London, UK
| | - Ariful Islam
- EcoHealth Alliance, New York, USA; Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, VIC, Australia
| | - Sezanur Rahman
- Infectious Diseases Division, icddr,b, Dhaka, Bangladesh
| | - Rashedul Hasan
- Infectious Diseases Division, icddr,b, Dhaka, Bangladesh
| | | | - Mozaffar G Osmani
- Department of Livestock Services, Ministry of Fisheries and Livestock, Dhaka, Bangladesh
| | | | | | - Najmul Haider
- Infectious Diseases Division, icddr,b, Dhaka, Bangladesh; Department of Pathobiology and Population Sciences, Royal Veterinary College, University of London, UK
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Ahamed S, Nazir KHMNH, Yousuf MA, Islam MM, Arafat MY, Islam MA, Mahmud MM, Islam MR. Seromonitoring of Peste des Petits Ruminants in goats and molecular characterization of PPR virus from field cases. J Adv Vet Anim Res 2019; 6:416-424. [PMID: 31583240 PMCID: PMC6760515 DOI: 10.5455/javar.2019.f362] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 08/04/2019] [Accepted: 08/05/2019] [Indexed: 11/03/2022] Open
Abstract
Objectives The study was undertaken with the objectives to perform seromonitoring of Peste des Petits Ruminants (PPR) antibodies in goats vaccinated with PPR vaccine and molecular characterization of PPR virus (PPRV) from field cases in Bangladesh. Materials and Methods Seromonitoring work was conducted in Char Kalibari, Mymensingh Sadar, Mymensingh. For this, a total of 50 goats were randomly selected and were divided into two groups; vaccinated (Group A; n = 25) and non-vaccinated (Group B; n = 25). The goats of both groups were again sub-divided into four age groups; (i) 0-6 months (n = 5), (ii) 6-12 months (n = 5), (iii) 12-24 months (n = 10), and (iv) >24 months (n = 5). Blood samples were collected on Day-0 and after 21 days of post-vaccination (DPV), and the sera were prepared. The sera were examined for the presence of antibodies against PPRV by competitive enzyme-linked immunosorbent assay. For molecular characterization, nasal swabs (n = 10) were collected from PPR infected goats in Jessore during PPR outbreak (February 2016). The causative agent, PPRV isolated from field cases were confirmed by N gene based on reverse transcription polymerase chain reaction (RT-PCR), followed by sequencing, phylogenetic analysis, and multiple sequence alignment analyses. Results In the case of seromonitoring, the results revealed that before vaccination (at Day-0), overall, 44% (n = 22/50) goats were seropositive for PPRV. In Group A, 48% (n = 12/25) goats were seropositive, but after 21 DPV, 96% (n = 24/25) goats become seropositive. On the other hand, in Group B, 40% (n = 10/25) and 16% (n = 04/25) seropositive goats found at Day-0 and after 21 DPV, respectively, indicating that the antibody titer was increasing after vaccination and decreasing in convalescent goats. Out of 10 nasal swab samples, 40% (n = 4/10) was confirmed by RT-PCR targeting nucleocapsid (N gene). Phylogenetically, our isolate (KY039156/PPRV/BDG/Jes/2016) was similar to the other strains of PPRV under lineage IV. However, there was a unique amino acid substitution, where glycine (G) was recorded in place of arginine (R). The strain is closely related with other Chinese or Indian strains. The nucleotide sequence homology by NCBI BLAST search of the isolated strain ranged from 95% to 99% with other strains circulating in Bangladesh. Conclusion The PPRV is prevailing in the Mymensingh and Jessore regions of Bangladesh. Effective control of PPR in goats may depend on vaccination with PPR vaccine. Molecular characterization of PPRV in Jessore reveals that the virus is differing from the strain prevalent in other regions of Bangladesh and the world.
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Affiliation(s)
- Shamim Ahamed
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - K H M Nazmul Hussain Nazir
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Md Abu Yousuf
- Animal Health Research Division, Bangladesh Livestock Research Institute (BLRI) Savar, Dhaka, Bangladesh
| | - Md Monowarul Islam
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Md Yeasin Arafat
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Md Ariful Islam
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Md Muket Mahmud
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Md Rafiqul Islam
- Livestock Division, Bangladesh Agricultural Research Council, Dhaka, Bangladesh
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Pandey SK, Koirala P, Maharjan M, Lamien CE, Cattoli G, Dundon WG, Settypalli TBK. Molecular characterization of peste-des-petits ruminants virus from Nepal, 2005 to 2016. Virusdisease 2019; 30:315-318. [PMID: 31179373 DOI: 10.1007/s13337-018-0504-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 12/14/2018] [Indexed: 11/25/2022] Open
Abstract
Outbreaks of peste-des-petits ruminants (PPR) has been reported regularly in Nepal since 1994. Despite this, there has been limited molecular characterization of circulating virus in the country. In this study a 351 bp segment of the nucleoprotein gene of the PPR virus (PPRV) was amplified and sequenced from ten samples collected between 2005 and 2016. Phylogenetic trees were estimated from these sequences using the maximum likelihood method confirming that all of the PPRV from the samples analysed belonged to the sub-clade IV of clade I of lineage IV and that they shared a common origin with other PPRV isolates in the region.
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Affiliation(s)
| | | | | | - Charles Euloge Lamien
- 2Animal Production and Health Laboratory Joint, FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Wagramer Strasse 5, P.O. Box 100, 1400 Vienna, Austria
| | - Giovanni Cattoli
- 2Animal Production and Health Laboratory Joint, FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Wagramer Strasse 5, P.O. Box 100, 1400 Vienna, Austria
| | - William G Dundon
- 2Animal Production and Health Laboratory Joint, FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Wagramer Strasse 5, P.O. Box 100, 1400 Vienna, Austria
- APHL Joint FAO/IAEA Division, IAEA Laboratories, 2444 Seibersdorf, Austria
| | - Tirumala B K Settypalli
- 2Animal Production and Health Laboratory Joint, FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Wagramer Strasse 5, P.O. Box 100, 1400 Vienna, Austria
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Comparison of the Immunogenicities and Cross-Lineage Efficacies of Live Attenuated Peste des Petits Ruminants Virus Vaccines PPRV/Nigeria/75/1 and PPRV/Sungri/96. J Virol 2018; 92:JVI.01471-18. [PMID: 30258008 PMCID: PMC6258957 DOI: 10.1128/jvi.01471-18] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 09/14/2018] [Indexed: 01/14/2023] Open
Abstract
Despite the widespread use of live attenuated PPRV vaccines, this is the first systematic analysis of the immune response elicited in small ruminants. These data will help in the establishment of the immunological determinants of protection, an important step in the development of new vaccines, especially DIVA vaccines using alternative vaccination vectors. This study is also the first controlled test of the ability of the two major vaccines used against virulent PPRV strains from all genetic lineages of the virus, showing conclusively the complete cross-protective ability of these vaccines. Peste des petits ruminants (PPR) is a severe disease of goats and sheep that is widespread in Africa, the Middle East, and Asia. Several effective vaccines exist for the disease, based on attenuated strains of the virus (PPRV) that causes PPR. While the efficacy of these vaccines has been established by use in the field, the nature of the protective immune response has not been determined. In addition, while the vaccine derived from PPRV/Nigeria/75/1 (N75) is used in many countries, those developed in India have never been tested for their efficacy outside that country. We have studied the immune response in goats to vaccination with either N75 or the main Indian vaccine, which is based on isolate PPRV/India/Sungri/96 (S96). In addition, we compared the ability of these two vaccines, in parallel, to protect animals against challenge with pathogenic viruses from the four known genetic lineages of PPRV, representing viruses from different parts of Africa, as well as Asia. These studies showed that, while N75 elicited a stronger antibody response than S96, as measured by both enzyme-linked immunosorbent assay and virus neutralization, S96 resulted in more pronounced cellular immune responses, as measured by virus antigen-induced proliferation and interferon gamma production. While both vaccines induced comparable numbers of PPRV-specific CD8+ T cells, S96 induced a higher number of CD4+ T cells specifically responding to virus. Despite these quantitative and qualitative differences in the immune responses following vaccination, both vaccines gave complete clinical protection against challenge with all four lineages of PPRV. IMPORTANCE Despite the widespread use of live attenuated PPRV vaccines, this is the first systematic analysis of the immune response elicited in small ruminants. These data will help in the establishment of the immunological determinants of protection, an important step in the development of new vaccines, especially DIVA vaccines using alternative vaccination vectors. This study is also the first controlled test of the ability of the two major vaccines used against virulent PPRV strains from all genetic lineages of the virus, showing conclusively the complete cross-protective ability of these vaccines.
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