Background: Canine distemper virus (CDV) infects a variety of carnivores, including wild and domestic Canidae. In this study, we sequenced and phylogenetic analyses of the hemagglutinin (H) genes from eight canine distemper virus (CDV) isolates obtained from seven raccoon dogs (Nyctereutes procyonoides) and a giant panda (Ailuropoda melanoleuca) in China.

Results: Phylogenetic analysis of the partial hemagglutinin gene sequences showed close clustering for geographic lineages, clearly distinct from vaccine strains and other wild-type foreign CDV strains, all the CDV strains were characterized as Asia-1 genotype and were highly similar to each other (91.5-99.8% nt and 94.4-99.8% aa). The giant panda and raccoon dogs all were 549Y on the HA protein in this study, irrespective of the host species.

Conclusions: These findings enhance our knowledge of the genetic characteristics of Chinese CDV isolates, and may facilitate the development of effective strategies for monitoring and controlling CDV for wild canids and non-canids in China.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3636003PMC
http://dx.doi.org/10.1186/1743-422X-10-109DOI Listing

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  • Logistic regression showed that raccoon population density and environmental factors, like residential area ratios, were linked to seropositivity rates, particularly highlighting changes over the years from forest to residential areas.
  • Ongoing monitoring and improved raccoon control efforts are crucial to prevent disease spread to native wildlife like raccoon dogs and foxes, as well as to protect domestic dogs from health risks.
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  • The giant panda, an emblem of biodiversity conservation, is threatened by the canine distemper virus (CDV), making the vaccination of domestic dogs in their habitats essential.
  • A study of 69 domestic dogs showed that vaccinated dogs can shed the virus starting nine days after vaccination, with unvaccinated dogs also at risk of increased antibody levels and viral shedding.
  • To protect giant pandas, it’s recommended that vaccinated dogs have restricted activity for at least three weeks post-vaccination, alongside collaboration among local authorities and community members for better management of domestic dog vaccinations.
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