A vaccine is a biological preparation that provides active acquired immunity to a particular disease.A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins.
earlier, "fluid from cowpox pustules used in inoculation," noun use of vaccine "of cowpox" (in the phrases vaccine disease, vaccine matter), borrowed from New Latin vaccina (in variolae vaccinae "cowpox"), going back to Latin, feminine of vaccīnus "of or from a cow," from vacca "cow" (perhaps akin to Sanskrit vaśā "cow") + -īnus 1-ine; in ...
Vaccine definition, any preparation used as a preventive inoculation to confer immunity against a specific disease, usually employing an innocuous form of the disease agent, as killed or weakened bacteria or viruses, to stimulate antibody production.
Vaccine: Vaccine, suspension of weakened or killed microorganisms or toxins or of antibodies or lymphocytes that is administered to prevent disease.
A vaccine is given by a doctor or nurse and makes a person less likely to get a disease.It gives immunity to an infectious disease caused by a particular germ (bacteria or virus).
Immunization shots, vaccines or inoculations are essential in preventing many life-threatening diseases. Discover immunization schedules for any age.
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