The National Academies

The National Academies: What You Need To Know About Infectious Disease

What You Need To Know About Infectious Disease

New infectious diseases are emerging and old ones are appearing in new places around the globe. What’s behind this trend? And to what extent has human behavior amplified the problem? The National Academies, advisers to the nation in science, engineering, and medicine, provide the information you need to understand this complex topic.

Infection

Microbes are all around us. Most don’t do any harm, and many are beneficial, but what about the few that cause infection? Learn the basics.

Threats

Certain aspects of disease are a particular threat to us today. What are some of the things we're most concerned about in the United States?

Challenges

National borders do little to block the path of infectious disease. Learn how our modern way of life contributes to the emergence and spread of diseases.

Prevention

What do we need to do—as individuals and as a society—to stave off the threat of emerging infectious disease?

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What do you know about infectious disease?

What fraction of all deaths worldwide are caused by infectious disease?

  • Sorry, that’s incorrect.

    About one quarter of all deaths worldwide are caused by infectious disease. More than two-thirds of the deaths in children under the age of five are caused by infectious disease.

  • Correct!

    About one quarter of all deaths worldwide are caused by infectious disease. More than two-thirds of the deaths in children under the age of five are caused by infectious disease.

  • Sorry, that’s incorrect.

    About one quarter of all deaths worldwide are caused by infectious disease. More than two-thirds of the deaths in children under the age of five are caused by infectious disease.

Infectious Disease Defined

Ecosystem

A functional unit that consists of all the living organisms in a particular area, as well as the nonliving, physical components in the environment—such as air, soil, water, and sunlight—with which the organisms interact, and how natural and human-made changes affect these interactions.

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Disease Watchlist

Dysentery

Dysentery is the inflammation of the colon characterized by frequent, watery stools, often tinged with blood and mucus. Dysentery is usually caused by one of two different organisms—Shigella bacteria or an amoeba, Entamoeba histolytica

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