Origin of vaccine
Related formspro·vac·cine, adjective
Examples from the Web for vaccine
The vaccine is delivered through a “carrier virus” that causes a common cold in chimpanzees but does not affect humans.
The need for an Ebola vaccine in West Africa has never been greater.
With Ebola still raging in West Africa, the race to find a vaccine is heating up.
On average, the vaccine has an efficacy of about 60 percent.
With enough changing of the influenza RNA over time, the vaccine no longer provokes the “right” immune response.
That excuse scarcely exists now, for there are few physicians who cannot obtain a better form of vaccine within a very short time.
We use the cow to get vaccine for small-pox, the horse to supply the anti-toxin for diphtheria.Bert Wilson, Wireless Operator|J. W. Duffield
The method of preparing the vaccine is similar to that recommended by Lignires.Special Report on Diseases of Cattle|U.S. Department of Agriculture
But he really ought to know the difference between a vaccine and an anti-toxin.The Doctor's Dilemma|George Bernard Shaw
As to its use, as stated by London, in lieu of the vaccine matter, it is altogether erroneous.
British Dictionary definitions for vaccine
Word Origin for vaccine
Medicine definitions for vaccine
Science definitions for vaccine
A Closer Look
In the 1950s, polio epidemics left thousands of children with permanent physical disabilities. Today, infants are given a vaccine to prevent infection with the polio virus. That vaccine, like most others, works by stimulating the body's immune system to produce antibodies that destroy pathogens. Scientists usually prepare vaccines by taking a sample of the pathogen and destroying or weakening it with heat or chemicals. The inactivated or attenuated pathogen loses its ability to cause serious illness but is still able to stimulate antibody production, thereby conferring immunity. The Salk polio vaccine contains killed virus, while the Sabin polio vaccine contains weakened live poliovirus. (Many scientists no longer consider viruses to be living organisms) Scientists are also able to change the structure of viruses and bacteria at the molecular level, altering DNA so that the potential of the vaccine to cause disease is decreased. New vaccines containing harmless bits of DNA have also been developed.
Culture definitions for vaccine
A substance prepared from dead or living microorganisms that is introduced into the body through inoculation. The vaccine causes the development of antibodies, which produce immunity to the disease caused by the microorganism.