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What is a pandemic?

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A pandemic is an outbreak of a disease that occurs on a global scale, affecting a large number of people across multiple countries or continents.

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What is an epidemic?

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An epidemic is an outbreak of a disease that occurs in a specific community or region, affecting a larger number of people than usual.

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Which is larger: an epidemic or a pandemic?

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A pandemic is larger than an epidemic.

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What is the primary method to prevent the spread of smallpox?

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Worldwide vaccination of smallpox.

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What role does an epidemiologist play in public health?

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An epidemiologist studies the patterns, causes, and effects of health and disease conditions in defined populations, often determining the source of disease outbreaks.

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Which illness is most likely to spread globally?

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Influenza is most likely to spread throughout the world and infect the most people.

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What is the significance of vaccination in controlling epidemics?

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Vaccination helps to build immunity in the population, reducing the spread of infectious diseases.

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How does an epidemic differ from a pandemic in terms of scale?

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An epidemic is localized to a specific area, while a pandemic affects a much larger geographic area.

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What factors contribute to the spread of a pandemic?

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Factors include human behavior, global travel, population density, and the nature of the infectious agent.

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What is herd immunity?

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Herd immunity occurs when a significant portion of a population becomes immune to a disease, making its spread unlikely.