undetected

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

WHO's Africa regional director Mohamed Yakub Janabi said Ebola had had a silent early phase, when symptoms resemble malaria or typhoid, meaning transmission can remain undetected.

From Barron's • May 22, 2026

The World Health Organization declared a global health emergency over an Ebola outbreak in the Democratic Republic of Congo and Uganda, warning that the epidemic could still be spreading undetected.

From The Wall Street Journal • May 17, 2026

A phishing email was used to launch the hack which allowed the cyber attackers to install malicious software and it remained undetected within the organisation's systems for 20 months.

From BBC • May 12, 2026

A higher threshold may reduce wrongful interventions but could allow legitimate threats to go undetected.

From Salon • May 12, 2026

If undetected, it can lie dormant in the human body for years before erupting in a positive fiesta of maladies.

From "A Walk in the Woods" by Bill Bryson