The National Academies
What You Need To Know About Infectious Disease
How Infection Works
Types of Microbes
The microorganisms, or microbes, that can cause disease come in different forms. Viruses and bacteria are probably the most familiar because we hear so much about them. But fungi, protozoa, and helminths are also big players in the story of infectious disease. Learn more about each of these five main categories, as well as a recently discovered one: prions.
Explore Other Topics
Disease Watchlist
What do you know about infectious disease?
The 1918 influenza pandemic (the so-called “Spanish” flu) is estimated to have killed how many people worldwide?
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Sorry, that’s incorrect.
The 1918 influenza pandemic is estimated to have killed between 50 million and 100 million people worldwide. Many of those deaths were due to the effects of pneumococcal pneumonia, a secondary complication of flu for which no antibiotics existed in 1918.
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Sorry, that’s incorrect.
The 1918 influenza pandemic is estimated to have killed between 50 million and 100 million people worldwide. Many of those deaths were due to the effects of pneumococcal pneumonia, a secondary complication of flu for which no antibiotics existed in 1918.
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Correct!
The 1918 influenza pandemic is estimated to have killed between 50 million and 100 million people worldwide. Many of those deaths were due to the effects of pneumococcal pneumonia, a secondary complication of flu for which no antibiotics existed in 1918.
Infectious Disease Defined
- Toxin
A poisonous substance produced by the metabolic processes of living cells or organisms.
National Academies Press
Search the National Academies Press website by selecting one of these related terms.
Source Material
- Fungal Diseases: An Emerging Threat to Human, Animal, and Plant Health— Workshop Summary (2011)
- Infectious Disease Movement in a Borderless World—Workshop Summary (2010)
- Microbial Evolution and Co-Adaptation: A Tribute to the Life and Scientific Legacies of Joshua Lederberg (2009)
- The New Science of Metagenomics: Revealing the Secrets of Our Microbial Planet (2007)
- Ending the War Metaphor: The Changing Agenda for Unraveling the Host-Microbe Relationship—Workshop Summary (2006)
- Microbial Threats to Health: Emergence, Detection, and Response (2003)
