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.

The outbreak went undetected for weeks and crossed into Uganda.

From The Wall Street Journal • Jun. 2, 2026

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 first known case was a nurse who developed symptoms on 24 April, so the virus had been spreading undetected for weeks.

From BBC • May 18, 2026

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

From Salon • May 12, 2026

Getting to the Potomac undetected means traveling down well-used public roads.

From "Lincoln's Last Days: The Shocking Assassination that Changed America Forever" by Bill O'Reilly