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the claim

Canine distemper virus is an emerging disease because high mutability and host-switching enable it to emerge in previously unknown host species.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Canine distemper virus is an emerging disease because high mutability and host-switching enable it to emerge in previously unknown host species?

Yes. Canine distemper virus is recognized as an emerging multi-host pathogen whose high mutability—particularly in the hemagglutinin gene—and capacity for host-switching allow it to infect and emerge in a wide range of previously unknown mammalian species.

Verdict: SUPPORTED · 8 sources for, 0 against · Last checked

The analysis

The retrieved literature consistently supports the claim that canine distemper virus (CDV) is characterized by high genetic mutability, particularly in its receptor-binding hemagglutinin (H) protein, and an unusually broad and expanding host range. Multiple studies document its ability to undergo cross-species transmission (host-switching) and emerge in novel wildlife hosts, ranging from non-human primates and big cats to small mammals like tree shrews. There are no papers refuting this mechanism of viral emergence.

Evidence for · 8
Cross-species transmission of canine distemper virus—an update
2015
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Beineke, A., Baumgärtner, W., & Wohlsein, P. (2015). Cross-species transmission of canine distemper virus—an update. doi.org. https://doi.org/10.1016/j.onehlt.2015.09.002

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More for · 7
Evolution and Interspecies Transmission of Canine Distemper Virus—An Outlook of the Diverse Evolutionary Landscapes of a Multi-Host Virus
2019
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Duque-Valencia, J., Sarute, N., Olarte-Castillo, X. A., & Ruíz-Sáenz, J. (2019). Evolution and Interspecies Transmission of Canine Distemper Virus—An Outlook of the Diverse Evolutionary Landscapes of a Multi-Host Virus. doi.org. https://doi.org/10.3390/v11070582

Canine Distemper Virus in Endangered Species: Species Jump, Clinical Variations, and Vaccination
2022
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Wilkes, R. P. (2022). Canine Distemper Virus in Endangered Species: Species Jump, Clinical Variations, and Vaccination. doi.org. https://doi.org/10.3390/pathogens12010057

Cross‐species transmission and evolutionary dynamics of canine distemper virus during a spillover in African lions of Serengeti National Park
2020
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Weckworth, J. K., Davis, B., Dubovi, E., Fountain‐Jones, N., Packer, C., Cleaveland, S., Craft, M. E., Eblate, E., Schwartz, M. K., Mills, L. S., & Roelke-Parker, M. (2020). Cross‐species transmission and evolutionary dynamics of canine distemper virus during a spillover in African lions of Serengeti National Park. doi.org. https://doi.org/10.1111/mec.15449

Evolutionary and structural basis of SLAMF1 utilization in morbilliviruses—Implications for host range and cross-species transmission
2025
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Hyodo, A., Seki, F., Fukuda, K., Tashiro, K., Kitai, Y., Akahori, Y., Watabe, H., Katoh, H., Osaki, R., Takaya, D., Kawashita, N., Fukuhara, H., Ikegame, S., Yoshikawa, T., Eunsil, P., Morikawa, S., Yamaguchi, R., Lee, B., Maenaka, K., Shirai, T., Fukuzawa, K., Tanaka, S., & Takeda, M. (2025). Evolutionary and structural basis of SLAMF1 utilization in morbilliviruses—Implications for host range and cross-species transmission. doi.org. https://doi.org/10.1371/journal.ppat.1012990

Global Phylogenetic Analysis of the CDV Hemagglutinin Gene Reveals Positive Selection on Key Receptor-Binding Sites.
2025
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TÇ, O. & BT, K. (2025). Global Phylogenetic Analysis of the CDV Hemagglutinin Gene Reveals Positive Selection on Key Receptor-Binding Sites.. doi.org. https://doi.org/10.3390/v17091149

Phylogenetic and sequence analysis of the co-circulating lineages in the canine distemper virus complexity from Northern Vietnam (2017-2023).
2025
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HTT, D., KT, N., RT, D., LM, D., PV, T., & TH, L. (2025). Phylogenetic and sequence analysis of the co-circulating lineages in the canine distemper virus complexity from Northern Vietnam (2017-2023).. doi.org. https://doi.org/10.1007/s11259-025-10750-8

Preliminary study of canine distemper virus transmission from small mammals to Malayan tiger at Kampung Besul Lama, Terengganu, Malaysia
2025
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Lazarus, B., Sadali, M. F. M., Kamal, F. M., Hua, K. K., Wahab, R. A., Kaderi, M., Abdullah, M. L., Azizan, T. R. P. T., & Ahmad, H. (2025). Preliminary study of canine distemper virus transmission from small mammals to Malayan tiger at Kampung Besul Lama, Terengganu, Malaysia. doi.org. https://doi.org/10.14202/vetworld.2025.791-798

What does the evidence say?

The retrieved literature consistently supports the claim that canine distemper virus (CDV) is characterized by high genetic mutability, particularly in its receptor-binding hemagglutinin (H) protein, and an unusually broad and expanding host range. Multiple studies document its ability to undergo cross-species transmission (host-switching) and emerge in novel wildlife hosts, ranging from non-human primates and big cats to small mammals like tree shrews. There are no papers refuting this mechanism of viral emergence.

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