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The Origin of the Variola Virus [PDF]

open access: yesViruses, 2015
The question of the origin of smallpox, one of the major menaces to humankind, is a constant concern for the scientific community. Smallpox is caused by the agent referred to as the variola virus (VARV), which belongs to the genus Orthopoxvirus.
Igor V. Babkin, Irina N. Babkina
doaj   +5 more sources

Prediction of steps in the evolution of variola virus host range. [PDF]

open access: goldPLoS ONE, 2014
Variola virus, the agent of smallpox, has a severely restricted host range (humans) but a devastatingly high mortality rate. Although smallpox has been eradicated by a World Health Organization vaccination program, knowledge of the evolutionary processes
Chad Smithson   +3 more
doaj   +4 more sources

Gene duplication, gene loss, and recombination events with variola virus shaped the complex evolutionary path of historical American horsepox-based smallpox vaccines [PDF]

open access: yesmBio, 2023
Vaccinia virus is the active component of all modern smallpox vaccines after the mid-20th century, but it is uncertain to what extent cowpox, vaccinia, and horsepox viruses were used to produce vaccines before then.
Aline R. V. Souza   +4 more
doaj   +2 more sources

Evidence of Long-Distance Aerial Convection of Variola Virus and Implications for Disease Control [PDF]

open access: yesViruses, 2019
Two distinct phenomena of airborne transmission of variola virus (smallpox) were described in the pre-eradication era—direct respiratory transmission, and a unique phenomenon of transmission over greater distances, referred to as “aerial ...
Chandini Raina MacIntyre   +4 more
doaj   +2 more sources

SUSCEPTIBILITY OF SUCKLING MICE TO VARIOLA VIRUS [PDF]

open access: bronzeJournal of Bacteriology, 1961
Marshall, Ronald G. (Army Chemical Corps, Fredrick, Md.), and Peter J. Gerone . Susceptibility of suckling mice to variola virus. J. Bacteriol. 82: 15–19. 1961.—The susceptibility of suckling mice inoculated intraperitoneally or intracerebrally with variola virus was investigated.
Ronald G. Marshall, Peter J. Gerone
openalex   +3 more sources

Single-Dose Assay Technique for Variola Virus [PDF]

open access: diamondApplied Microbiology, 1964
A biological assay for variola virus was needed that would (i) require a minimum of time and (ii) have acceptable precision. Preliminary titrations made in 11-day-old embryonated eggs and in suckling mice (6 to 24 hr of age) demonstrated a linear relationship between the concentration of variola virus injected and the mean reciprocal time to death (MTD)
Jean M. Riley, Michael D. Orlando
openalex   +3 more sources

Re-Assembly and Analysis of an Ancient Variola Virus Genome [PDF]

open access: yesViruses, 2017
We report a major improvement to the assembly of published short read sequencing data from an ancient variola virus (VARV) genome by the removal of contig-capping sequencing tags and manual searches for gap-spanning reads. The new assembly, together with
Chad Smithson, Jacob Imbery, Chris Upton
doaj   +2 more sources

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