Shigella Fact Sheet What Is Shigella?

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Shigella Fact Sheet What is Shigella? Shigella is closely related to Escherichia and is considered, by some scientists, to be another strain of E. coli. This group of bacteria found in the intestine of man and other animals. This form of food poisoning is known as bacillary dysentery. There are four pathogenic species of the bacteria: • Shigella sonnei - a mild dysentery • Shigella dysenteriae - severe dysentery • Shigella flexneri • Shigella boydii If you have Dysentery you may be experiencing the following symptoms: • Onset (hours: 12 hours to 2 days) • Symptoms and duration of illness: Diarrhoea, fever, vomiting, abdominal pain. In severe cases blood and pus may be present in the faeces Foods incriminated It is often spread from person to person via the faecal-oral route. Associated foods include salads (especially potato, sea food, meats or pasta) raw vegetables, milk, dairy products, poultry or contaminated water. Control measures Good personal hygiene, control of flies, hygienic preparation of food and the use of potable water all help to prevent outbreaks of the disease. Mild forms of the disease (caused by Shigella sonnei) occur in the UK but it is more common in tropical countries where crowded populations that have poor personal hygiene and inadequate water and sewage systems exist. Individuals primarily responsible for transmission are those who fail to clean their hands or under their fingernails thoroughly after defecation. They may then spread infection to others directly by physical contact or indirectly by contaminating food. Dogs which have ingested infected human faeces, may be the source of infection in children Susceptible groups Infants, the elderly, and the infirm are susceptible to the severest symptoms of disease, but all humans are susceptible to some degree. Shigellosis is very common by individuals with acquired immune deficiency syndrome (AIDS) Disclaimer: This article is for information only and should not be used for the diagnosis or treatment of medical conditions. HBC has used all reasonable care in compiling the information but make no warranty as to its accuracy. Always consult a doctor or other health care professional for diagnosis and treatment of medical conditions. Environmental Services Food, Health & Safety Team 01424 451078 www.hastings.gov.uk/environmental_health .

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Shigella Infection - Factsheet
Shigella Infection - Factsheet What is Shigellosis? How common is it? Shigellosis is an infectious disease caused by a group of bacteria (germs) called Shigella. It’s also known as bacillary dysentery. There are four main types of Shigella germ but Shigella sonnei is by far the commonest cause of this illness in the UK. Most cases of the other types are usually brought in from abroad. How is Shigellosis caught? Shigella is not known to be found in animals so it always passes from one infected person to the next, though the route may be indirect. Here are some possible ways in which you can get infected: • Shigella germs are present in the stools of infected persons while they are ill and for a week or two afterwards. Most Shigella infections are the result of germs passing from stools or soiled fingers of one person to the mouth of another person. This happens when basic hygiene and hand washing habits are inadequate, such as in young toddlers who are not yet fully toilet trained. Family members and playmates of such children are at high risk of becoming infected. • Shigellosis can be acquired from someone who is infected but has no symptoms. • Shigellosis may be picked up from eating contaminated food, which may look and smell normal. Food may become contaminated by infected food handlers who do not wash their hands properly after using the toilet. They should report sick and avoid handling food if they are ill but they may not always have symptoms. • Vegetables can become contaminated if they are harvested from a field with sewage in it.
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