BMC Veterinary Research (Jan 2021)

Molecular characterization of lumpy skin disease virus (LSDV) emerged in Bangladesh reveals unique genetic features compared to contemporary field strains

  • Shukes Chandra Badhy,
  • Mohammad Golam Azam Chowdhury,
  • Tirumala Bharani Kumar Settypalli,
  • Giovanni Cattoli,
  • Charles Euloge Lamien,
  • Mohammad Aflak Uddin Fakir,
  • Shamima Akter,
  • Mozaffar Goni Osmani,
  • Faisol Talukdar,
  • Noorjahan Begum,
  • Izhar Ahmed Khan,
  • Md Bazlur Rashid,
  • Mohammad Sadekuzzaman

DOI
https://doi.org/10.1186/s12917-021-02751-x
Journal volume & issue
Vol. 17, no. 1
pp. 1 – 11

Abstract

Read online

Abstract Background Lumpy skin disease (LSD) is a contagious viral disease of cattle caused by lumpy skin disease virus (LSDV). LSD has recently spread in Asia following outbreaks in the Middle East and Europe. The disease emerged in Bangladesh in July 2019 in the Chattogram district, then rapidly spread throughout the entire country. We investigated six LSD outbreaks in Bangladesh to record the clinical signs and collect samples for diagnostic confirmation. Furthermore, we performed the molecular characterization of Bangladesh isolates, analyzing the full RPO30 and GPCR genes and the partial EEV glycoprotein gene. Results Clinical observations revealed common LSD clinical signs in the affected cattle. PCR and real-time PCR, showed the presence of the LSDV genome in samples from all six districts. Phylogenetic analysis and detailed inspection of multiple sequence alignments revealed that Bangladesh isolates differ from common LSDV field isolates encountered in Africa, the Middle East, and Europe, as well as newly emerged LSDV variants in Russia and China. Instead, they were closely related to LSDV KSGP-0240, LSDV NI2490, and LSDV Kenya. Conclusions These results show the importance of continuous monitoring and characterization of circulating strains and the need to continually refine the strategies for differentiating vaccine strains from field viruses.

Keywords