detected

Health officials said bat bites are often too small to be detected.

The recent threats were all hoaxes, Mr Mohol said, with "no actual threat detected at any of the airports/aircraft in India".

Researchers only detected the gas recently, because it used to be notoriously hard to measure and earlier work focussed on warmer oceans, whereas the polar oceans are the emission hotspots.

Last week, public health officials in Santa Clara County detected bird flu virus in a store-bought sample of McAfee’s raw milk.

Among the instructions for Law were to follow Hoult around for a day without being detected and to assemble a dossier on his activities.