A children’s nursery is the suspected source of an outbreak of salmonella food poisoning which has so far affected four children in County Durham.

Four youngsters aged three upwards have been confirmed by laboratory tests as being infected, with four more suspected cases. A trust spokeswoman confirmed that a nursery in Bishop Auckland was one possible source.

She said none of the four children with the bug had been admitted to hospital.

"Salmonella infections cause a range of symptoms, including watery and sometimes bloody diarrhoea, abdominal pain, headache, nausea, vomiting and fever,” she said. "The infection occurs through eating contaminated food, mainly of animal origin, or through close contact with an infected person or animal.”