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Genetic Characterization of Peste des Petits Ruminants Virus Circulating in Bangladesh

Genetic Characterization of Peste des Petits Ruminants Virus Circulating in Bangladesh

Mohammad Mushfiqur Rahman1, Rokshana Parvin1, Ataur Rahman Bhuiyan1, Mohammad Giasuddin2, Shah Md. Ziqrul Haq Chowdhury3, Mohammad Rafiqul Islam1, Emdadul Haque Chowdhury1*

 

1Department of Pathology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh; 2Bangladesh Livestock Research Institute, Savar, Dhaka; 3Bangladesh Agricultural Research Council, Bangladesh. 

Email: emdad001@yahoo.com

 

 

ABSTRACT

Abstract | Peste des petits ruminants (PPR) is an acute and highly contagious viral disease of small ruminants. The disease is endemic in Bangladesh and causes considerable economic losses due to its high morbidity and mortality. The study was undertaken to detect and characterize the PPR virus (PPRV) circulating in Bangladesh. Twelve local isolates of Bangladeshi PPRV were successfully detected from post mortem samples (lymph node, spleen and trachea) of goats and a sheep during the year 2008-2012. The partial N gene of ten isolates and partial F gene of eight isolates were amplified by RT-PCR, and were sequenced. The phylogenetic analysis revealed that PPRVs circulating in Bangladesh belonged to Lineage IV and they formed a separate sub-cluster along with recent isolates from Nepal, Bhutan and China. On genetic analyses, it appeared that the N gene of PPRV is less conserved as compared to the F gene. Two unique amino acid substitutions (K423Q and E426G) were observed in Bangladeshi and Chinese isolates in the partial sequence of N protein.The recent Bangladeshi isolates are somewhat divergent from the earlier Bangladeshi isolate, indicating that the PPRV strains in Bangladesh are continuously changing their genetic character.

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Hosts and Viruses

December

Vol.10, Pages 1-71

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