what is the causative agent of amoebic dysentery
Answers
entamoeba hystolitica
Answer:
Amoebic Dysentery. Amoebic dysentery is an intestinal infection caused by a protozoan parasite called Entamoeba histolytica. Infection by Entamoeba histolytica may be asymptomatic.
Clinical Features
Infection by Entamoeba histolytica may be asymptomatic. For patients who develop amoebic dysentery, symptoms include fever, chills, diarrhoea, abdominal pain and passing stool with blood and/or mucus, etc. Entamoeba histolytica may invade the liver to form an abscess. Less commonly, it spreads to other parts of the body, such as the lungs or brain. Other complications include inflammation of the intestine and in severe cases, perforation.
Mode of Transmission
Transmission of amoebic dysentery occurs mainly through the faecal-oral route, including ingestion of faecal contaminated food or water containing the cyst of Entamoeba histolytica. Transmission can also occur through person-to-person contact such as diaper-changing and oral-anal sex.
Risk Factors
People who live in institutions, travellers who travel to or immigrants from developing countries with poor sanitary conditions, and men who have sex with men are at a higher risk of getting the disease.
Incubation Period
The incubation period is variable, and may range from a few days to several months. It is usually 2 - 4 weeks.
Management
Treatment may include appropriate use of antibiotics.
Preventions
1. Maintain good personal hygiene
Perform hand hygiene frequently, especially before handling food or eating, and after using the toilet or handling faecal matter.
Wash hands with liquid soap and water, and rub for at least 20 seconds. Then rinse with water and dry with a disposable paper towel or hand dryer. If hand washing facilities are not available, or when hands are not visibly soiled, hand hygiene with 70 to 80% alcohol-based handrub is an effective alternative.
Refrain from work or school, and seek medical advice when suffering from gastrointestinal symptoms such as diarrhoea.
2. Maintain good food hygiene
Adopt the 5 Keys to Food Safety in handling food, i.e. Choose (Choose safe raw materials); Clean (Keep hands and utensils clean); Separate (Separate raw and cooked food); Cook (Cook thoroughly); and Safe Temperature (Keep food at safe temperature) to prevent foodborne diseases.
Drink only boiled water from the mains or bottled drinks from reliable sources.
Avoid drinks with ice of unknown origin.
Purchase fresh food from hygienic and reliable sources. Do not patronise illegal hawkers.
Eat only thoroughly cooked food.
Wash and peel fruit by yourself and avoid eating raw vegetables.
Exclude infected persons and asymptomatic carriers from handling food and from providing care to children, elderly and immunocompromised people.
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