1.Serosurveillance for Japanese encephalitis virus infection among equines in India.
Baldev R GULATI ; Harisankar SINGHA ; Birendra K SINGH ; Nitin VIRMANI ; Sandip K KHURANA ; Raj K SINGH
Journal of Veterinary Science 2011;12(4):341-345
The seroprevalence of Japanese encephalitis virus (JEV) among equines was evaluated from January 2006 to December 2009 in 13 different states of India by hemagglutination inhibition (HI) test and virus neutralization test (VNT). Antibodies against JEV were detected in 327 out of 3,286 (10%) equines with a maximum prevalence reported in the state of Manipur (91.7%) followed by Gujarat (18.5%), Madhya Pradesh (14.4%), and Uttar Pradesh (11.6%). Evidence of JEV infection was observed in equines in Indore (Madhya Pradesh) where a 4-fold or higher rise in antibody titer was observed in 21 out of 34 horses in November 2007 to October 2006. In March 2008, seven of these horses had a subsequent 4-fold rise in JEV antibody titers while this titer decreased in nine animals. JEV-positive horse sera had a JEV/WNV (West Nile virus) ratio over 2.0 according to the HI and/or VNT. These results indicated that JEV is endemic among equines in India.
Animals
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Encephalitis, Japanese/blood/epidemiology/*veterinary
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*Equidae
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India/epidemiology
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Neutralization Tests
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Seroepidemiologic Studies
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Time Factors
2.Peste des petits ruminants virus detected in tissues from an Asiatic lion (Panthera leo persica) belongs to Asian lineage IV.
Vinayagamurthy BALAMURUGAN ; Arnab SEN ; Gnanavel VENKATESAN ; Vandana BHANOT ; Vineeta YADAV ; Veerakyathappa BHANUPRAKASH ; Raj Kumar SINGH
Journal of Veterinary Science 2012;13(2):203-206
In this study, peste des petits ruminants virus (PPRV) was detected in frozen pooled tissue samples from a dead Asiatic lion (Panthera leo persica). The samples were negative for canine distemper virus and positive for PPRV nucleic acids when tested with one-step RT-PCR using the appropriate virus-specific primers. Subsequent amplification, cloning, and sequencing of the partial nucleocapsid, matrix, and fusion genes confirmed the presence of PPRV nucleic acid. Comparative sequence and phylogenetic analyses of the structural genes of the isolated virus confirmed that the virus belonged to Asian lineage IV and was closely related to PPRV circulating in India.
Animals
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Cloning, Molecular
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*Lions
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Peste-des-petits-ruminants virus/*genetics/*isolation & purification
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Phylogeny
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Reverse Transcriptase Polymerase Chain Reaction/veterinary
3.Prevalence of peste des petits ruminants among sheep and goats in India.
Vinayagamurthy BALAMURUGAN ; Paramasivam SARAVANAN ; Arnab SEN ; Kaushal Kishor RAJAK ; Gnanavel VENKATESAN ; Paramanandham KRISHNAMOORTHY ; Veerakyathappa BHANUPRAKASH ; Raj Kumar SINGH
Journal of Veterinary Science 2012;13(3):279-285
This study measured the clinical prevalence of peste des petits ruminants (PPR) among sheep and goats in India between 2003 and 2009 by analyzing clinical samples from suspected cases of PPR that were submitted to the Rinderpest and Allied Disease Laboratory, Division of Virology, IVRI, Mukteswar for PPR diagnosis. PPR outbreaks were confirmed by detecting PPR virus (PPRV)-specific antigen in the clinical samples. Clinical samples (blood, nasal swabs, spleen, lymph node, kidney, liver, intestine, and pooled tissue materials) were taken from a total of 592 sheep and 912 goats in different states of India and screened for the presence of PPRV antigen using a monoclonal antibody-based sandwich ELISA kit. A total of 20, 38, and 11 laboratory-confirmed PPR outbreaks occurred among sheep, goat, and combined sheep and goat populations, respectively. Our findings provide evidence of widespread PPR endemicity in India. The underlying reasons could be variations in husbandry practices in different geographical regions, agro-climatic conditions, and livestock migration. Furthermore, decrease in the number of PPR outbreaks over time might be due to the effectiveness of current live PPR vaccines and timely vaccination of target species. Vaccination against PPR has been practiced in India since 2002 to control this disease.
Animals
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Antibodies, Monoclonal/immunology
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Antigens, Viral/*blood
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Disease Outbreaks/*veterinary
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Enzyme-Linked Immunosorbent Assay/veterinary
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Goat Diseases/*epidemiology/immunology/prevention & control
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Goats
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India/epidemiology
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Nucleocapsid Proteins/immunology
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Peste-des-Petits-Ruminants/epidemiology/immunology/prevention & control/*veterinary
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Peste-des-petits-ruminants virus/*immunology/isolation & purification
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Prevalence
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Risk Factors
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Seasons
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Sheep
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Sheep Diseases/*epidemiology/immunology/prevention & control
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Vaccination/veterinary
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Viral Vaccines/*immunology/therapeutic use