In the UK, bacillary is usually caused by the bacterium Shigella sonnei. It is an acute disease of the intestine characterised by diarrhoea, fever, stomach cramps, nausea and often vomiting. Stools may contain blood, mucus and pus. Fatality is normally less than 1%. The incubation period is usually 1 to 3 days, although it varies between 1 to 7 days. Dysentery is spread through faecal-oral transmission from an infected person or by the consumption of contaminated foods, included water and milk. Control measures are similar to those used for typhoid, with the emphasis on personal hygiene.