Newcastle disease
noun
New·cas·tle disease
ˈnü-ˌka-səl- 
ˈnyü-;
n(y)ü-ˈka-
: a contagious often fatal virus disease of birds and especially the domestic chicken that is caused by a paramyxovirus (species Newcastle disease virus of the genus Avulavirus) and that is marked by respiratory and nervous symptoms
Examples of Newcastle disease in a Sentence
Recent Examples on the Web
The detection of Newcastle disease, a viral condition often fatal to chickens, in some parts of Brazil impedes the South American nation’s ability to become a significant U.S. egg supplier, market insiders say.
—
Vanessa Gera and Kerstin Sopke, Los Angeles Times, 29 Mar. 2025
However, Brazil is affected by Newcastle disease, a virus that often kills poultry, the U.S. Department of Agriculture said, and the country cannot supply the U.S. with eggs for sale in grocery stores or pasteurized liquid eggs for human consumption.
—Tom Polansek, USA TODAY, 24 Mar. 2025
Researchers at the Icahn School of Medicine at Mount Sinai in New York City selected a bird pathogen, Newcastle disease virus (NDV).
—Stephani Sutherland, Scientific American, 15 Oct. 2024
This hurdle does not seem insurmountable, the experts Vox spoke with said, since poultry already receive several vaccines such as those for Newcastle disease, salmonella, and bronchitis.
—Jess Craig, Vox, 14 May 2024
Birds can carry highly contagious diseases affecting poultry, like the virulent Newcastle disease and Highly Pathogenic Avian Influenza.
—Marisa Garcia, Forbes, 18 Feb. 2024
They’re also vaccinated against Newcastle disease, a respiratory illness; infectious bronchitis; and acute necrotic proventriculitis, a viral disease that affects the immune system.
—Jen Christensen, CNN, 10 Mar. 2023
Contaminated eggshells can spread avian diseases like Newcastle disease and Highly Pathogenic Avian Influenza.
—Zoe Sottile, CNN, 28 Mar. 2023
Uncooked poultry and eggs have been prohibited from entering the U.S. from Mexico since 2012 by the USDA due to high cases of highly pathogenic avian influenza, or HPAI, and Newcastle disease.
—Salvador Hernandezstaff Writer, Los Angeles Times, 9 Feb. 2023
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Vanessa Gera and Kerstin Sopke, Los Angeles Times, 29 Mar. 2025
However, Brazil is affected by Newcastle disease, a virus that often kills poultry, the U.S. Department of Agriculture said, and the country cannot supply the U.S. with eggs for sale in grocery stores or pasteurized liquid eggs for human consumption.
—Tom Polansek, USA TODAY, 24 Mar. 2025
Researchers at the Icahn School of Medicine at Mount Sinai in New York City selected a bird pathogen, Newcastle disease virus (NDV).
—Stephani Sutherland, Scientific American, 15 Oct. 2024
This hurdle does not seem insurmountable, the experts Vox spoke with said, since poultry already receive several vaccines such as those for Newcastle disease, salmonella, and bronchitis.
—Jess Craig, Vox, 14 May 2024
Birds can carry highly contagious diseases affecting poultry, like the virulent Newcastle disease and Highly Pathogenic Avian Influenza.
—Marisa Garcia, Forbes, 18 Feb. 2024
They’re also vaccinated against Newcastle disease, a respiratory illness; infectious bronchitis; and acute necrotic proventriculitis, a viral disease that affects the immune system.
—Jen Christensen, CNN, 10 Mar. 2023
Contaminated eggshells can spread avian diseases like Newcastle disease and Highly Pathogenic Avian Influenza.
—Zoe Sottile, CNN, 28 Mar. 2023
Uncooked poultry and eggs have been prohibited from entering the U.S. from Mexico since 2012 by the USDA due to high cases of highly pathogenic avian influenza, or HPAI, and Newcastle disease.
—Salvador Hernandezstaff Writer, Los Angeles Times, 9 Feb. 2023
Cite this Entry
“Newcastle disease.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Newcastle%20disease. Accessed 10 Apr. 2025.
Copy CitationMedical Definition
Newcastle disease
noun
New·cas·tle disease
ˈn(y)ü-ˌkas-əl-, n(y)ü-ˈ
: a contagious mild to fatal virus disease of birds and especially the domestic chicken that is caused by a paramyxovirus of the genus Rubulavirus (species Newcastle disease virus), that is marked by highly variable respiratory, digestive, and nervous clinical signs (as sneezing, coughing, diarrhea, incoordination, tremors, and twitching of the head) and that is especially destructive to young birds although all ages may be attacked
called also pseudoplague
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