Question

Why does the vaccine not causes disease itself ?​

Answer 1

Answer:

Germs are all around us, both in our environment and in our bodies. When a person is susceptible and they encounter a harmful organism, it can lead to disease and death.

The body has many ways of defending itself against pathogens (disease-causing organisms). Skin, mucus, and cilia (microscopic hairs that move debris away from the lungs) all work as physical barriers to prevent pathogens from entering the body in the first place.

When a pathogen does infect the body, our body’s defences, called the immune system, are triggered and the pathogen is attacked and destroyed or overcome.

Explanation:

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Answer 2

• A vaccine comprises an inactive or dead component of a certain organism (antigen) that causes the body to respond with an immune response.
• The non-harmful component of the organism is sufficient for our bodies to learn to produce particular antibodies against the antigen included in vaccines.
• If the body is subsequently confronted by a fragment of a genuine creature, it will know how to combat it by making the appropriate quantity of antibody.
• Explanation: Some vaccines require numerous doses because it is sometimes required to allow for the generation of long-lasting antibodies and the establishment of memory t-cells.
• This allows the body to be taught to fight a specific disease-causing organism while also building up pathogen memory.