In so far unexplained circumstances two adults had contact with Novichok, either in Salisbury or a nearby village; after four days the media broadcast the story. One of them, a woman has now died.
An acknowledged SME, Alistair Hay, has a short article; he tries to answer this:Link:https://www.bbc.co.uk/news/health-44778697So what do we know about Novichok and how long it remains in the environment? Regrettably, very little. There is insufficient scientific data to be certain about the time it takes for this chemical to degrade and for the threat it poses to end.
The second article is partly from a public meeting held to reassure the local population. One must wonder if this was successful:Link:https://www.theguardian.com/uk-news/2018/jul/10/nerve-agent-poisoning-inquiry-spreads-to-swindon-car-seized-dawn-sturgess?The nerve agent that killed a Wiltshire woman could last for 50 years if it remains in a container, Britain’s top counter-terrorism officer has said.
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