CAIE A-Level Biology AS 10.1.3 Transmission of Cholera Malaria Tb Hiv Questions
Explain transmission routes of cholera, malaria, tuberculosis and HIV using evidence from each question and mark scheme.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- AS
Exam points
- Explain transmission of cholera, malaria, tuberculosis and HIV.
CAIE A-Level Biology AS 10.1.3 Transmission of Cholera Malaria Tb Hiv Questions question 1
[Maximum number: 3]
In March 2019, a tropical cyclone in the south-west Indian Ocean caused widespread flooding in a number of countries.
The flooding and the damage caused by the cyclone meant that many people were at serious risk of cholera.
After the natural disaster occurred, many different areas reported outbreaks of cholera. Within a short time the disease had spread widely and large numbers of people were affected.
Suggest and explain why the people affected by the cyclone were at serious risk of cholera.
any three from:
1 cholera already, endemic / present, in area ;
2 contaminated water / water contains pathogen ;
R polluted water
3 pathogen transmitted by, faecal-oral route / AW ;
4 ref. to changed living conditions ;
e.g. no piped, treated, drinking water / disruption to water treatment plants no safe disposal of sewage / disruption to sewage treatment plants
5 ref. to inability to practise good hygiene ;
e.g. washing (utensils) in contaminated water not able to wash hands after defaecation latrines not covered
6 AVP ;
e.g. ref. to flies transferring pathogen from, uncovered latrines / (contaminated) faeces
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