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Vaccine
01
a substance, often administered through needle injections, that stimulates the body's immune response against harmful diseases
What is a "vaccine"?
A vaccine is a substance given to stimulate the body's immune system to protect against a particular disease. It typically has a small, weakened, or a non-active part of the virus or bacteria that causes the disease. When a person receives a vaccine, their immune system recognizes the foreign substance as a threat and produces antibodies to fight it. This process prepares the immune system to respond quickly if the person is exposed to the disease-causing organism in the future, preventing illness or reducing its intensity.
Example
Childhood vaccines have significantly reduced the incidence of once-common diseases.
The new vaccine was developed to protect against the flu virus.
Health officials recommended getting a COVID-19 vaccine to curb the spread of the virus.
The doctor explained the importance of receiving a tetanus vaccine after a deep cut.
The annual flu vaccine is recommended for vulnerable populations such as the elderly and young children.
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