The National Academies

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

What You Need To Know About Infectious Disease

What do you know about infectious disease?

In 2008, about how many people worldwide were infected with HIV (human immunodeficiency virus)?

  • Sorry, that’s incorrect.

    In 2008, more than 33 million people worldwide were infected with HIV (human immunodeficiency virus). In that same year, an estimated 2 million people died from AIDS (acquired immunodeficiency syndrome), the final stage of HIV infection.

  • Sorry, that’s incorrect.

    In 2008, more than 33 million people worldwide were infected with HIV (human immunodeficiency virus). In that same year, an estimated 2 million people died from AIDS (acquired immunodeficiency syndrome), the final stage of HIV infection.

  • Correct!

    In 2008, more than 33 million people worldwide were infected with HIV (human immunodeficiency virus). In that same year, an estimated 2 million people died from AIDS (acquired immunodeficiency syndrome), the final stage of HIV infection.

Which are larger?

  • Correct!

    Bacteria are 10 to 100 times larger than viruses.

  • Sorry, that’s incorrect.

    Bacteria are 10 to 100 times larger than viruses.

How many people in the world do not have access to an adequate water supply?

  • Sorry, that’s incorrect.

    Worldwide, 884 million people do not have access to an adequate water supply, and about three times that number lack basic sanitation services. An estimated 2 million deaths a year can be attributed to unsafe water supplies.

  • Sorry, that’s incorrect.

    Worldwide, 884 million people do not have access to an adequate water supply, and about three times that number lack basic sanitation services. An estimated 2 million deaths a year can be attributed to unsafe water supplies.

  • Correct!

    Worldwide, 884 million people do not have access to an adequate water supply, and about three times that number lack basic sanitation services. An estimated 2 million deaths a year can be attributed to unsafe water supplies.

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.

Which reproduce the fastest:

  • Sorry, that’s incorrect.

    Viruses reproduce the fastest. Humans produce a new generation every 20 years or so; bacteria do it every 20 to 30 minutes, and viruses even faster.

  • Sorry, that’s incorrect.

    Viruses reproduce the fastest. Humans produce a new generation every 20 years or so; bacteria do it every 20 to 30 minutes, and viruses even faster.

  • Correct!

    Viruses reproduce the fastest. Humans produce a new generation every 20 years or so; bacteria do it every 20 to 30 minutes, and viruses even faster.

Which of the following is not a viral disease:

  • Sorry, that’s incorrect.

    Trichinosis is not a viral disease. It is caused by a helminth (parasitic worm) found in undercooked meat, not by a virus. 

  • Sorry, that’s incorrect.

    Trichinosis is not a viral disease. It is caused by a helminth (parasitic worm) found in undercooked meat, not by a virus.   

  • Correct!

    Trichinosis is not a viral disease. It is caused by a helminth (parasitic worm) found in undercooked meat, not by a virus.  

About what percentage of the antibiotics produced in the United States is added to animal feeds to promote growth?

  • Sorry, that’s incorrect.

    Almost 70% of all the antibiotics produced in the United States is added to animal feeds—not to fend off disease but to boost growth. These non-therapeutic uses of antibiotics are a perfect way to cultivate microbes that are resistant to antibiotics.

  • Sorry, that’s incorrect.

    Almost 70% of all the antibiotics produced in the United States is added to animal feeds—not to fend off disease but to boost growth. These non-therapeutic uses of antibiotics are a perfect way to cultivate microbes that are resistant to antibiotics.

  • Correct!

    Almost 70% of all the antibiotics produced in the United States is added to animal feeds—not to fend off disease but to boost growth. These non-therapeutic uses of antibiotics are a perfect way to cultivate microbes that are resistant to antibiotics.

Due in large measure to the toll of infectious diseases, the gap in life expectancy between the richest and poorest countries now exceeds how many years?

  • Sorry, that’s incorrect.

    The gap in life expectancy between the richest and poorest countries now exceeds 40 years.

  • Sorry, that’s incorrect.

    The gap in life expectancy between the richest and poorest countries now exceeds 40 years.

  • Correct!

    The gap in life expectancy between the richest and poorest countries now exceeds 40 years.

  • Sorry, that’s incorrect.

    The gap in life expectancy between the richest and poorest countries now exceeds 40 years.

If you have strep throat, which of the following forms of medication can be used to effectively treat the infection?

  • Sorry, that’s incorrect.

    Because strep throat is caused by a bacterium called Streptococcus pyogenes, it is treatable with antibiotics but not antivirals. Currently there is no vaccine available to prevent strep throat.

  • Correct!

    Because strep throat is caused by a bacterium called Streptococcus pyogenes, it is treatable with antibiotics but not antivirals. Currently there is no vaccine available to prevent strep throat.

  • Sorry, that’s incorrect.

    Because strep throat is caused by a bacterium called Streptococcus pyogenes, it is treatable with antibiotics but not antivirals. Currently there is no vaccine available to prevent strep throat.

  • Sorry, that’s incorrect.

    Because strep throat is caused by a bacterium called Streptococcus pyogenes, it is treatable with antibiotics but not antivirals. Currently there is no vaccine available to prevent strep throat.

How long did it take the 2009 “swine flu” pandemic to spread to 30 countries?

  • Sorry, that’s incorrect.

    The 2009 “swine flu” pandemic starkly illustrated the impact of globalization and air travel on the movement of infectious diseases—with the infection spreading to 30 countries within six weeks and to more than 190 countries and territories within months.

  • Correct!

    The 2009 “swine flu” pandemic starkly illustrated the impact of globalization and air travel on the movement of infectious diseases—with the infection spreading to 30 countries within six weeks and to more than 190 countries and territories within months.

  • Sorry, that’s incorrect.

    The 2009 “swine flu” pandemic starkly illustrated the impact of globalization and air travel on the movement of infectious diseases—with the infection spreading to 30 countries within six weeks and to more than 190 countries and territories within months.

Place this badge on your Facebook page to show your friends what you know about infectious disease.

Get the badge

Place this badge on your Facebook page to show your friends what you know about infectious disease.

Get the badge

OR, get a higher score to unlock a different badge.

Retake the quiz

Place this badge on your Facebook page to show your friends what you know about infectious disease.

Get the badge

OR, get a higher score to unlock a different badge.

Retake the quiz

Explore Other Topics

Infectious Disease Defined

Morbidity

The relative occurrence of a disease or a condition that causes illness.

View our full glossary