Chasing Jenner's Vaccine: Revisiting Cowpox Virus Classification
2011

Revisiting Cowpox Virus Classification

Sample size: 12 publication Evidence: moderate

Author Information

Author(s): Darin S. Carroll, Ginny L. Emerson, Yu Li, Scott Sammons, Victoria Olson, Michael Frace, Yoshinori Nakazawa, Claus Peter Czerny, Morten Tryland, Jolanta Kolodziejek, Norbert Nowotny, Melissa Olsen-Rasmussen, Marina Khristova, Dhwani Govil, Kevin Karem, Inger K. Damon, Hermann Meyer

Primary Institution: Centers for Disease Control and Prevention

Hypothesis

Cowpox virus is not a single species but a composite of several species that can infect cows, humans, and other animals.

Conclusion

The study suggests that cowpox virus should be reclassified into multiple species based on genetic data.

Supporting Evidence

  • The study analyzed whole genome sequences from 12 cowpox virus isolates.
  • Phylogenetic analyses revealed that cowpox virus is a polyphyletic assemblage.
  • Genetic distances between isolates suggest the need for reclassification into multiple species.
  • Previous studies indicated significant genotypic diversity among cowpox virus strains.

Takeaway

Scientists found that cowpox virus is actually made up of several different types, not just one, which means we need to change how we classify it.

Methodology

Whole genome sequences from 12 isolates identified as CPXV were analyzed using phylogenetic and genomic analyses.

Limitations

The study may not include all circulating CPXV strains, particularly from the UK.

Digital Object Identifier (DOI)

10.1371/journal.pone.0023086

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