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Use the following data to answer parts (a) and (b) - HSC - SSCE Biology - Question 32 - 2019 - Paper 1
Question 32
Use the following data to answer parts (a) and (b). Dengue fever and malaria are examples of infectious diseases transmitted between humans by mosquitoes. Dengue fe... show full transcript
Worked Solution & Example Answer:Use the following data to answer parts (a) and (b) - HSC - SSCE Biology - Question 32 - 2019 - Paper 1
Step 1
Identify relevant global trends in malaria and dengue fever based on the data provided
Answer
The data indicates a rise in the incidence of dengue fever and a fluctuating trend in malaria cases. Post-1950, regions like South America and Africa witnessed significant increases in dengue fever cases, while the number of countries reporting malaria cases has decreased. Notably, even as the global population grows, the percentage of those at risk for malaria has stabilized, suggesting improved control measures.
Step 2
Identify trends in the incidence of malaria and dengue fever
Answer
Dengue fever's incidence has markedly increased since the mid-20th century, while malaria cases show a declining trend in reported countries, suggesting shifts in public health approaches. Interestingly, the population at risk for malaria increased until the early 1990s, after which stabilization occurred, indicating a potential positive impact of public health interventions.
Step 3
Provide a relevant trend
Answer
A significant trend observed is the overall increase in global awareness and funding for mosquito-borne diseases, particularly post-2000, which has adapted prevention strategies leading to lesser populations at risk for malaria, even as global cases of dengue fever rise concurrently.