...They all adopt readily the use of vaccine virus when it is brought within their reach...
David Livingstone 「Missionary Travels and Researches in South Africa」
...Absolute safetyagainst this contagion is secured only by a total avoidance ofthe walks of the infected animals, till repeated rains, or whatis better, frosts, have disarmed the virus of its malignity...
Richard L. Allen 「Domestic Animals」
...It is nowconceded that foot-and-mouth disease is propagated by a specific virus and thatevery outbreak starts from some preexisting outbreak...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...It has long been known that theanthrax virus thrives best under certain conditions of the soil and onterritories subject to floods and inundations...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Another source of the virus, and one regarded by many authorities as perhapsthe most important, is the body of an animal which has died of anthrax...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...By vaccination we understand the injection of a minute amount ofattenuated—that is, artificially weakened—blackleg virus into thesystem...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The disease may be inoculated from one animal to another, but only by insertingthe virus deeply below the skin...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
..., whence the susceptiblecattle obtain the virus secondhand...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...That frictions, with the hands impregnated with virus, having been madeover the skin, did not produce any ill effects...
Honoré Bourguignon 「On the cattle plague: or, Contagious typhus in horned cattle. Its history, origin, description, and treatment」
...The contagious typhus of the ox not being a real typhoid fever, we shallnot, consequently, be able to borrow from it the preventive virus forthat disease in man...
Honoré Bourguignon 「On the cattle plague: or, Contagious typhus in horned cattle. Its history, origin, description, and treatment」
...The virus thus attenuated would have supplied the means of a practicalinoculation on a large scale to all healthy animals...
Honoré Bourguignon 「On the cattle plague: or, Contagious typhus in horned cattle. Its history, origin, description, and treatment」
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