Vaccines contain dead or weakened [[1]] of a particular disease.

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Detailed Solution

Vaccines contain dead or weakened pathogens of a particular disease.

Pathogens are disease-causing microorganisms such as bacteria, viruses, and fungi. Vaccines use these pathogens in a weakened or inactivated state to stimulate the immune system to produce an immune response. This response includes the production of antibodies that can recognize and neutralize the pathogen if the person is exposed to it in the future.

The use of weakened or dead pathogens in vaccines ensures that they do not cause disease in the person receiving the vaccine, while still allowing the immune system to recognize and respond to the pathogen. This provides immunity to the person, without the risk of severe illness or complications from the disease itself. This is how vaccines protect individuals and communities from the spread of infectious diseases.

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