Silva, Natalia I. O.; de Oliveira, Jaqueline S.; Kroon, Erna G.; Trindade, Giliane d. S.; Drumond, Betânia P. (2021). ”Here, There, and Everywhere: The Wide Host Range and Geographic Distribution of Zoonotic Orthopoxviruses”. Viruses 13 (1): sid. 1-20. doi:10.3390/v13010043.
Haller, Sherry L.; Peng, Chen; McFadden, Grant; Rothenburg, Stefan (2014). ”Poxviruses and the evolution of host range and virulence”. Infection, Genetics and Evolution 21: sid. 15–40. doi:10.1016/j.meegid.2013.10.014.
Krankowska, Dagny C.; Woźniak, Piotr A.; Cybula, Aneta; Izdebska, Justyna; Suchacz, Magdalena; Samelska, Katarzyna (2021). ”Cowpox: How dangerous could it be for humans? Case report”. International journal of infectious diseases 104: sid. 239–241. doi:10.1016/j.ijid.2020.12.061.