What role do vaccines play in controlling infectious diseases?

Question

Vaccines prevent the spread of infectious diseases by building immunity in individuals and communities. They have eradicated diseases like smallpox and reduced the prevalence of measles, polio, and influenza globally.

Answer 1

Vaccines play a critical role in controlling infectious diseases by boosting immunity, reducing the spread of pathogens, and preventing severe illness and deaths. They protect communities through herd immunity, minimize healthcare burdens, and are essential in eradicating diseases like polio and smallpox.

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Answer 2

Vaccines play a crucial role in controlling infectious diseases by stimulating the immune system to recognize and fight specific pathogens, such as viruses or bacteria, without causing illness. They introduce a safe version of the pathogen (e.g., inactivated or weakened), prompting the body to produce antibodies. If exposed to the actual pathogen later, the immune system can respond more quickly and effectively, preventing the spread of disease and reducing the severity of infections.

Answer 3

It helps by imitating an infection to engage the body's natural defenses .It helps the body learn how to defend itself from disease without the dangers of a full-blown infection.Helps your immune system how to create antibodies that protect you from diseases .Prevents between 3-5 million deaths across the world annually from diseases including diphtheria, tetanus, whooping cough,
flu and measles.