- capable of being transmitted by bodily contact with an infected person or object: contagious diseases.
- carrying or spreading a contagious disease.
- tending to spread from person to person: contagious laughter.
Origin of contagious
Examples from the Web for contagious
Many doomsday preppers have spent their lives stocking up for an emergency of the type this contagious hemorrhagic fever presents.Apocalypse Now: Preppers Are Gearing Up for Ebola
October 17, 2014
First: Was he contagious when boarding the plane and are his plane-mates therefore at risk?The CDC Was Wrong About How to Stop Ebola
October 1, 2014
While the virus can remain incubated for up to 21 days, it is not contagious until a patient begins showing symptoms.CDC Director: First U.S. Ebola Patient ‘Critically Ill’
September 30, 2014
The resultant pop culture is as morbid and contagious as the epidemics they depict.Ebola Rages in West Africa, Reigniting Humanity’s Oldest Fear: The Plague
August 4, 2014
But the most important thing to note, says Monroe, is that only those who are symptomatic are contagious.CDC Calls Ebola Outbreak ‘Forest Fire’
July 28, 2014
There was about him a contagious cheerfulness, good-humor, and honesty.The First Violin
Her humor was contagious and Richling was ready to catch it.Dr. Sevier
George W. Cable
I am not able to determine whether it is or is not contagious.
The fever had now begun and, like all other contagious diseases, it soon spread.Negro Migration during the War
Emmett J. Scott
His refined, magnetic enthusiasm is contagious, and at times most fascinating.Oswald Langdon
Carson Jay Lee
- (of a disease) capable of being passed on by direct contact with a diseased individual or by handling clothing, etc, contaminated with the causative agentCompare infectious
- (of an organism) harbouring or spreading the causative agent of a transmissible disease
- causing or likely to cause the same reaction or emotion in several people; catching; infectiousher laughter was contagious
Word Origin and History for contagious
late 14c., from Old French contagieus (Modern French contagieux), from Late Latin contagiosus, from Latin contagio (see contact (n.)).
- Of or relating to contagion.
- Transmissible by direct or indirect contact; communicable.
- Capable of transmitting disease; carrying a disease.
- Capable of being transmitted by direct or indirect contact, as an infectious disease.
- Bearing contagion, as a person or animal with an infectious disease that is contagious.
Usage: A contagious disease is one that can be transmitted from one living being to another through direct or indirect contact. Thus the flu, which can be transmitted by coughing, and cholera, which is often acquired by drinking contaminated water, are contagious diseases. Although infectious is also used to refer to such diseases, it has a slightly different meaning in that it refers to diseases caused by infectious agents-agents such as viruses and bacteria that are not normally present in the body and can cause an infection. While the notion of contagiousness goes back to ancient times, the idea of infectious diseases is more modern, coming from the germ theory of disease, which was not proposed until the later nineteenth century. Contagious and infectious are also used to refer to people who have communicable diseases at a stage at which transmission to others is likely.