Question

Describe certain bacterial diseases of human beings. [3 MARKS]

Answer 1

Each point: 1 Mark

1. Cholera : Cholera is an acutely infectious, fatal disease and is more common during overcrowded fairs, festivals and after floods.

• Cholera is caused by the bacterium Vibrio cholerae which is transmitted by flies, contaminated water and food.
• Symptoms include watery diarrhoea, effortless vomiting without nausea, eyes of the patient become shrunken etc.

2. Tuberculosis : Tuberculosis is an infectious disease which is communicated from one person to another directly or indirectly.

• Tuberculosis is caused by a bacterium-called Mycobacterium tuberculosis.
• Symptoms include fever, fatigue, coughing up with blood mucus, weakness, chest pain etc.

3. Typhoid: Typhoid is caused by the bacterium Salmonella typhi and it spreads through contaminated food and water.

• Symptoms include high fever, headache, stomach pain, weakness, vomiting and loose stools.