Outbreaks of cholera commonly occur in camps that are set up after a major natural disaster. The list shows some control measures that can be taken to limit the spread of cholera in the camps. 1 treating all drinking water supplies with a high concentration of chlorine 2 setting up an emergency treatment centre to isolate cases of cholera and treat them with antibiotics 3 using concentrated disinfectant to clean sewage disposal areas and infected bedding 4 health workers visiting regularly to detect cases 5 keeping good records of the number of cases and deaths at treatment centres Which features of these control measures involve an economic factor?

Biology

IGCSE&ALevel

CAIE

Exam No：9700_s25_qp_14 Year：2025 Question No：37

Answer:

Knowledge points:

10.1.1 state that infectious diseases are caused by pathogens and are transmissible

10.1.2.1 cholera – caused by the bacterium Vibrio cholerae

10.1.2.2 malaria – caused by the protoctists Plasmodium falciparum, Plasmodium malariae, Plasmodium ovale and Plasmodium vivax

10.1.2.3 tuberculosis (TB) – caused by the bacteria Mycobacterium tuberculosis and Mycobacterium bovis

10.1.2.4 HIV/AIDS – caused by the human immunodeficiency virus (HIV)

10.1.3 explain how cholera, malaria, TB and HIV are transmitted

10.1.4 discuss the biological, social and economic factors that need to be considered in the prevention and control of cholera, malaria, TB and HIV (details of the life cycle of the malarial parasite are not expected)

Answer:

Knowledge points:

Solution:

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