contagious disease

noun

plural contagious diseases

: an infectious disease (such as influenza, measles, or tuberculosis) that is transmitted by contact with an infected individual or infected bodily discharges or fluids (such as respiratory droplets), by contact with a contaminated surface or object, or by ingestion of contaminated food or water

Note: The terms contagious disease and communicable disease are often used interchangeably. However, communicable diseases such as malaria or schistosomiasis that are spread by contact with disease vectors (such as mosquitoes or ticks) are not typically considered to be "contagious" diseases since they cannot be spread from direct contact with another person.

Examples of contagious disease in a Sentence

Recent Examples on the Web

Today, however, some preventable, contagious diseases are making a comeback as vaccine hesitancy — often fed by misinformation — pushes immunization rates down. —Laura Ungar, Los Angeles Times, 28 June 2025

So two responses were in motion to deal with an extremely contagious disease that threatens small children the most. —Brandy Zadrozny, NBC news, 4 June 2025

Game theory reveals another pattern: For highly contagious diseases, vaccination rates tend to decline rapidly following safety concerns, while recovery occurs much more slowly. —Avi Dor, The Conversation, 5 June 2025

Over the weekend, the KDHE and the Pawnee County Health Department reported a positive case of the highly contagious disease involving a resident there. —Robert A. Cronkleton, Kansas City Star, 29 May 2025

Word History

First Known Use

1529, in the meaning defined above

Rhymes for contagious disease

• idiosyncrasies
• abcs
• absentees
• addressees
• adoptees
• allottees
• amputees
• antifreeze
• appellees
• appointees
• arrestees
• artistes

Medical Definition

contagious disease

noun

: an infectious disease (as influenza, measles, or tuberculosis) that is transmitted by contact with an infected individual or infected bodily discharges or fluids (as respiratory droplets), by contact with a contaminated surface or object, or by ingestion of contaminated food or water

Note: The terms contagious disease and communicable disease are often used interchangeably. However, communicable diseases (as malaria or schistosomiasis) that are spread by contact with disease vectors (as mosquitoes or ticks) are not typically considered to be "contagious" diseases since they cannot be spread from direct contact with another person.