An infection by a microorganism that normally does not cause disease but becomes pathogenic when the body's immune system is impaired and unable to fight off infection, as in AIDS and certain other diseases.
Read more in this article about some frequently asked questions and fun facts related to our definitions.
What does “delicatessen” actually mean? After deli meat recall, learn the name of what caused the risk.
On Tuesday, a division of Tyson Foods Inc recalled 380,000 pounds of deli meat, saying that it may be contaminated with Listeria monocytogenes. The meat was used in sandwiches sold at Wal-Mart stores. Luckily, there have been no reported illnesses. Unfortunately, we often hear about salmonella. (Read more about salmonella here.) How does it differ from listeria? Listeria is a hardy bacterium that can cause food …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
An infection by a microorganism that normally does not cause disease but does so when lowered resistance to infection is caused by the impairment of the body's immune system.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.