Health | Diseases & Conditions | Infectious Diseases

Bird flu, malaria, plague and West Nile virus are infectious diseases we've all heard of. Find information on these epidemics and more in this section.

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Infectious Diseases 101

Your body is constantly dealing with microorganisms, its own and those introduced from the outside. Some microorganisms can cause what are called infectious diseases. Learn how the body deals with them.


How do diseases jump from infecting animals to infecting humans?

How do diseases jump from infecting animals to infecting humans?

Many diseases jump from infecting animals to infecting humans, sometimes with deadly consequences. See what you need to know about the spread of disease. See more »

Why are highly contagious diseases kept in labs?

Why are highly contagious diseases kept in labs?

Highly contagious diseases are often kept in labs, and some researchers insist it's with good reason. Find out why contagious diseases are kept in labs. See more »

Is the plane that transports Ebola patients completely safe?

Is the plane that transports Ebola patients completely safe?

Ebola patients transported out of Africa don't fly on regular commercial or private planes. Find out if the Ebola patient plane is safe at HowStuffWorks. See more »

Does Ebola affect people who are Rh-negative?

Does Ebola affect people who are Rh-negative?

Can you get Ebola if you're Rh-negative? Learn about the connection between Ebola and being Rh-negative at HowStuffWorks. See more »

5 Diseases That Don’t Spread the Way We Used to Think

5 Diseases That Don’t Spread the Way We Used to Think

Some illnesses we have gotten wrong over the years. See five diseases that don't spread the way we used to think to learn more. See more »

Will there be new STDs in the future?

Will there be new STDs in the future?

Are new STDs in our future? Find out if new sexually transmitted horrors are in the making at HowStuffWorks. See more »

10 Deadly Agents the CDC Works With

10 Deadly Agents the CDC Works With

The CDC routinely handles deadly agents that can cause disease and infection. View 10 of these public health enemies to learn more. See more »

5 Ways You Still Can't Get Ebola

5 Ways You Still Can't Get Ebola

Ebola transmission has been a concern after a major outbreak has killed thousands. See five myths about Ebola transmission to learn how you can't get infected. See more »

How Leper Colonies Work

How Leper Colonies Work

Leprosy was the AIDS of the first millennium. Find out how leper colonies worked at HowStuffWorks. See more »

10 Diseases That Used to Be Death Sentences

10 Diseases That Used to Be Death Sentences

Some diseases used to kill millions of people, but not any longer. Learn about 10 diseases that used to be death sentences from HowStuffWorks. See more »