Effects of Novichok Slide 3 • Novichok interferes with the normal functioning of the nervous system. If untreated, it will cause death by asphyxiation or cardiac arrest • Sergei Skripal, his daughter Yulia Skripal, and UK policeman Detective Sergeant Nick Bailey remain in hospital • 51 people have been assessed in hospital • 131 civilians have potentially been in contact with the nerve agent • 250 specialist counter-terrorism officers involved in the investigation • 180 military personnel were deployed