Ectromelia virus (ECTV) is a zoonotic viral disease whose natural host is the mouse. It belongs to the Poxviridae family of the genus Orthopoxvirus and is among the species of Vaccinia virus. It has a linear, double-stranded DNA genome that is 209,771 bp. The virion is gram-negative and appears in large, oval structures with a dimension of approximately 140 X 220 nm. (1.,2.)
Characteristics of the host
What host/s is/are involved? Is there host specificity? Are there secondary reservoirs?
The original ECTV strain was discovered in 1930 when mice were first introduced as an experimental laboratory animal.
What kind of interaction do host and symbiont have? How is the host affected by the relationship? How does the host acquire and transmit the symbiont? Is the interaction obligate or facultative?
Molecular Insights into the Symbiosis
Describe molecular/genetic studies on the symbiosis.
Ecological and Evolutionary Aspects
What is the evolutionary history of the interaction? Do particular environmental factors play a role in regulating the symbiosis? Since it's discovery in 1930, other ECTV strains have been isolated from various outbreaks around the world, with different disease severity.
Describe two findings on the symbiosis published within the last two years.
1. Chen, N et al. (2003). The genomic sequences of ectromelia virus, the causative agent of mousepox. Virology. 1: 165-86.
2. Esteban, D. and Buller, L. (2005). Ectromelia virus: the causative agent of mousepox. Virology. 86: 2645-2659.
Edited by [Elizabeth Stanley], students of Grace Lim-Fong
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