chapter 13: infectious disease (cholera) (term 2)

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CHOLERA

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Page 1: CHAPTER 13: Infectious Disease (CHOLERA) (TERM 2)

CHOLERA

Page 2: CHAPTER 13: Infectious Disease (CHOLERA) (TERM 2)

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)

Page 3: CHAPTER 13: Infectious Disease (CHOLERA) (TERM 2)

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

Page 4: CHAPTER 13: Infectious Disease (CHOLERA) (TERM 2)

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

Page 5: CHAPTER 13: Infectious Disease (CHOLERA) (TERM 2)

WHAT ARE THE SYMPTOMS?

Water Loss, Hydration

Abdominal Cramps

Vomiting

Nausea

Dry Mouth

Lethargy

Dry Skin

Leg Cramps Sunken Eyes

Page 6: CHAPTER 13: Infectious Disease (CHOLERA) (TERM 2)

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.

Page 7: CHAPTER 13: Infectious Disease (CHOLERA) (TERM 2)

HOW DOES IT TRANSMIT?

Page 8: CHAPTER 13: Infectious Disease (CHOLERA) (TERM 2)

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

Page 9: CHAPTER 13: Infectious Disease (CHOLERA) (TERM 2)

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

Page 10: CHAPTER 13: Infectious Disease (CHOLERA) (TERM 2)