Sentence examples for tracing were found from inspiring English sources

This study included all individuals who were part of the chain of transmission within Tan Tock Seng Hospital – i.e. all index patients causing secondary infections within (TTSH), as well as all individuals exposed in TTSH who, in the course of follow-up surveillance and contact tracing, were found to have contracted SARS, and hence also became index patients.

Mustard gas traces were found on Saturday in a hangar being used by the United States Air Force.

"No traces were found when they searched his home in Colorado".

Some traces were found on the wood burner and the hearth.

B9 NEW DISCOVERIES -- Anthrax traces were found in two more Washington post offices.

In 29 samples tested 624 pesticide traces were found, suggesting that 80% of the children had been exposed to agricultural pesticides in the previous three months.

In the dark, with the power out everywhere, waves had blasted through the houses here and swept some away so thoroughly that few traces were found.

On December 6th small radioactive traces were found at the British Embassy in Moscow, which had been visited earlier by Andrei Lugovoi, another former KGB employee.

The police have not directly linked those arrested to Al Qaeda, but documents gathered at the site where ricin traces were found are thought to reproduce information from the manuals on chemical weapons development discovered in abandoned Qaeda sites in Afghanistan.

BERLIN — France and Denmark on Monday became the latest countries affected by Germany's tainted food scare, in which pig and chicken feed were contaminated with dioxin and traces were found in exported food products.

Russian security officials have confirmed that the plane which crashed over Sinai at the end of October was brought down by a bomb, after explosive traces were found on the wreckage.