First case of serpentovirus infection in a ball python (Python regius) in Thailand: a case report with molecular characterization

Document Type : Clinical Report

Authors

1 Snake Farm, Queen Saovabha Memorial Institute, Bangkok, Thailand

2 Department of research and development, Queen Saovabha Memorial Institute, Bangkok, Thailand

Abstract
The pet snake industry in Thailand has seen a significant rise in popularity, with the ball python (Python regius) becoming a frequently kept species. However, respiratory disease poses a notable health concern, and various viral pathogens, including serpentoviruses (formerly classified as nidoviruses), have been implicated. While serpentovirus infections have been reported globally in diverse snake species, no documented cases had previously been identified in Thailand. This case report describes a 9-month-old ball python presenting to the Reptile Science Clinic at the Queen Saovabha Memorial Institute in Bangkok, Thailand, with respiratory distress and emaciation. Despite veterinary intervention, the snake succumbed to the infection within two weeks. Post-mortem examination revealed marked mucus accumulation within the oral cavity and necrotic oral mucosa. Histopathological analysis demonstrated severe catarrhal pneumonia. Molecular investigations confirmed the presence of serpentovirus in the lung tissue of the affected python, with subsequent sequence analysis revealing close homology to known serpentoviruses in ball pythons. This report documents the first confirmed case of serpentovirus infection in a pet snake in Thailand.

Keywords

Subjects


  1. Yimming B, Pattanatanang K, Sanyathitiseree P, et al. Molecular identification of cryptosporidium species from pet snakes in Thailand. Korean J Parasitol 2016; 54(4): 423-429.
  2. Comolli JR, Divers SJ. Respiratory diseases of snakes. Vet Clin North Am Exot Anim Pract 2021; 24(2): 321-340.
  3. Hoon-Hanks LL, Ossiboff RJ, Bartolini P, et al. Longitudinal and cross-sectional sampling of serpentovirus (nidovirus) infection in captive snakes reveals high prevalence, persistent infection, and increased mortality in pythons and divergent serpentovirus infection in boas and colubrids. Front Vet Sci 2019; 6: 338. doi: 10.3389/fvets.2019.00338.
  4. Blahak S, Jenckel M, Höper D, et al. Investigations into the presence of nidoviruses in pythons. Virol J 2020; 17(1): 6. doi: 10.1186/s12985-020-1279-5.
  5. Piewbang C, Wardhani SW, Poonsin P, et al. Epizootic reptilian ferlavirus infection in individual and multiple snake colonies with additional evidence of the virus in the male genital tract. Sci Rep 2021; 11: 12731. doi: 10.1038/s41598-021-92156-5.
  6. Dervas E, Hepojoki J, Laimbacher A, et al. Nidovirus-associated proliferative pneumonia in the green tree python (Morelia viridis). J Virol 2017; 91(21). e00718-17. doi: 10.1128/JVI.00718-17.
  7. Li WT, Lee MS, Tseng YC, et al. A case report of reptile-associated nidovirus (serpentovirus) in a ball python (Python regius) in Taiwan. J Vet Med Sci 2020; 82(6): 788-792.
  8. Tillis SB, Josimovich JM, Miller MA, et al. Divergent serpentoviruses in free-ranging invasive pythons and native colubrids in Southern Florida, United States. Viruses 2022; 14(12): 2726. doi: 10.3390/ v14122726.
  9. Doneley R, Monks D, Johnson R, et al. Reptile medicine and surgery in clinical practice. New Jersey, USA: John Wiley & Sons Ltd. 2018; 453-471.
  10. Uccellini L, Ossiboff RJ, de Matos RE, et al. Identification of a novel nidovirus in an outbreak of fatal respiratory disease in ball pythons (Python regius). Virol J 2014; 11: 144. doi: 10.1186/1743-422X-11-144.
  11. Tawichasri P, Laopichienpong N, Chanhome L, et al. Using blood and non-invasive shed skin samples to identify sex of caenophidian snakes based on multiplex PCR assay. Zool Anz 2017; 271: 6-14.
  12. Hoon-Hanks LL, Layton ML, Ossiboff RJ, et al. Respiratory disease in ball pythons (Python regius) experimentally infected with ball python nidovirus. Virology 2018; 517: 77-87.
  13. Cox M, Hoover M, Chanhome L, et al. The snakes of Thailand. Bangkok, Thailand: Chulalongkorn University Museum of Natural History 2012; 47-57.
  14. Dervas E, Hepojoki J, Smura T, et al. Serpentoviruses: more than respiratory pathogens. J Virol 2020; 94(18): e00649-20. doi: 10.1128/JVI.00649-20.
Volume 16, Issue 6
June 2025
Pages 361-364

  • Receive Date 02 July 2024
  • Revise Date 08 September 2024
  • Accept Date 05 October 2024