The Environment and Human Health Vocabulary Flashcard 1st

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What is a vector?

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An organism that transmits disease between hosts.

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What is a pathogen?

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A disease-causing microorganism.

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What is epidemiology?

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The study of how diseases spread and affect populations.

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What is toxicology?

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The study of poisons and their effects on living things.

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What is an infectious disease?

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A disease caused by a pathogen and can be spread.

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What is a virus?

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A microscopic infectious agent that can only replicate inside a living host cell.

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What is a bacterium?

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A single-celled microorganism that can be beneficial or pathogenic.

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What is a vaccine?

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A substance that stimulates the body's immune response against diseases.

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What is herd immunity?

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When a large percentage of a population becomes immune to a disease, reducing its spread.

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What is an antibiotic?

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A medicine that inhibits the growth of or destroys bacteria.