The precautionary guidance reinforces suspicions that the nerve agent used on Skripal and his daughter a week ago was first administered inside the restaurant. The public health notice said that although the risk was very low, repeated contact with clothing or items exposed to the nerve agent could still be a danger. She declined to reveal how the Skripals had been given the nerve agent, whether it was in powdered form in their food or dispersed as a liquid spray. If no one has had physical symptoms suggestive of nerve agent contact by now it is unlikely that they are a risk.”Different nerve agents decay at different rates, he added. Although the unusual nerve agent used in Salisbury has been identified by chemical weapons experts, its name and chemical composition has not yet been made public.

Source: The Guardian March 11, 2018 09:42 UTC