Recent Examples on the WebSimilarly, research from the Japanese Breast Cancer Society suggests that only 20 percent of breast cancer cases being detected by screening are asymptomatic and would have gone unnoticed otherwise.—Sofia Quaglia, Discover Magazine, 31 Oct. 2023 The first day of isolation is defined as either the day after symptoms start, or the day after a positive test result if someone is asymptomatic.—Jamie Ducharme, Time, 11 Oct. 2023 However, there are only a few small studies testing the accuracy of this approach in asymptomatic patients who don’t have a genetic predisposition for cancer, and their results don’t show a conclusive benefit to patients.—Claire Bugos, Verywell Health, 18 Aug. 2023 Peptic ulcer disease, a wearing away of the stomach lining, can be asymptomatic in some cases, but others are severe enough to make a patient double over in pain, two doctors told NBC News.—David K. Li, NBC News, 7 Sep. 2023 Traditionally, wild birds have been known to carry low-pathogenicity avian influenza, which is typically asymptomatic, whereas highly pathogenic avian influenza is usually found in poultry.—Meghan Bartels, Scientific American, 29 Aug. 2023 The traveler in Virginia was asymptomatic, according to the metadata submitted by the CDC's contractors.—Alexander Tin, CBS News, 24 Aug. 2023 Among the asymptomatic participants, 20 percent carried a common HLA variant called HLA-B*15:01.—Aara'l Yarber, Anchorage Daily News, 19 July 2023 Still, vaccinated people who test positive will likely be asymptomatic or experience a far milder illness than if they were not vaccinated.—Nicholas Rice, Peoplemag, 2 Aug. 2023 See More
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'asymptomatic.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
: not causing, marked by, or presenting with signs or symptoms of infection, illness, or disease
asymptomatic carriers of contagious disease
Decisions regarding the discontinuation of anticoagulation in such patients remain clinically challenging, requiring physicians to weigh the risk of bleeding against the risk of a stroke from asymptomatic arrhythmia.—Rodney H. Falk, The New England Journal of Medicine
Acute infection is usually asymptomatic, making early diagnosis difficult.—Francis V. Chisari, Nature
However, 10% to 25% of patients with Barrett's esophagus are completely asymptomatic.—Scientific American Medicine Bulletin
Red blood cell transfusions for chronic stable anemia in the asymptomatic patient are not clinically beneficial and will unnecessarily increase the patient's risk for infection, immunization to blood antigens, or hemosiderosis.—The Journal of the American Medical Association