chapter 13: infectious disease (cholera) (term 2)
TRANSCRIPT
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CHOLERA
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LEARNING OUTCOMES Describe the causes and symptoms of cholera;
Explain the transmission of cholera;
Describe the role of social, economical and biological factors in the prevention of cholera (MIXED)
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WHAT IS CHOLERA? An infectious and often fatal bacterial disease of the
small intestine, typically contracted from infected water supplies and causing severe vomiting and diarrhoea.
“Is an infection of the intestines”
Are found everywhere
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WHAT ARE THE CAUSES Caused by Vibrio Cholera, comma
shaped motile bacterium
Incubation period, 1 – 5 days
Multiply in the small intestines and release enterotoxin; choleragen, act on the mucosal epithelium lining
Violent inflammation of intestine, this toxin prevent the normal absorption of salt and water, resulting in vomiting and severe diarrhea
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WHAT ARE THE SYMPTOMS?
Water Loss, Hydration
Abdominal Cramps
Vomiting
Nausea
Dry Mouth
Lethargy
Dry Skin
Leg Cramps Sunken Eyes
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Once infected, symptoms appear within two or three days.
Bacteria in faeces of carriers that are free moving in the environment increases the chances of spreading the disease
Can cause death if left untreated because of dehydration.
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HOW DOES IT TRANSMIT?
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WHAT IS THE TREATMENT? Oral intake of packs water containing balanced mineral salts and
glucose. Oral rehydration therapy. Replace fluid and electrolytes lost through diarrhea.
Intravenous drip, feed into a vein
Antibiotics, tetracycline and chloramphenicol, destroy vibrious and decrease diarrhea. Shorten the course of disease
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HOW TO PREVENT CHOLERA? Improvement in basic human hygiene such as better garbage and
water disposal and in – house toilets with appropriate water flushing.
Supply of clean and safe drinking water
Proper hygiene handling, washing hand before eat / washing hand after went to the toilet
Vaccination (Travelers)
Prevent contamination from flies and other vectors
Immediate examination of diarrheal disease for bacterial content and effective treatment supplied immediately
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