Q27. Aqualunosis is a disease with high YLD but low YLL. Based on this, which of the following conclusions can you draw?

Q21. Calculate the mortality rate for aqualunosis in Minton in 2018. 

Q24. Local fisheries on Minton have expressed concern that handling fish might put workers at risk of contracting aqualunosis. Is handling fish likely to result in H. mentis infection in the workers? Briefly justify your response. (2–3 sentences) (2 marks)

Q19. Scientists have proposed that H. mentis should be classified as a protozoan. Do you agree or disagree with this classification? Use two pieces of information provided in this case study to justify your response. (2-3 sentences) (3 marks)

Q20. Calculate the incidence of aqualunosis in Minton in 2018.

Q23. How would you describe the scope of aqualunosis in Minton in 2020? Use the data in Table 3.1 to justify your response. (1-2 sentences) (2 marks)

In 2020, a seaside town on Minton experienced a large outbreak of aqualunosis following a community festival. Epidemiological investigation revealed that locally caught fish served raw in a traditional dish was the likely source of infection. While some festival attendees began to experience diarrhoea and abdominal pain shortly after the event, other attendees became ill several days later.

Q25. What is the most likely reason for the variation in incubation periods among affected individuals? 

Q22. How would you describe the scope of aqualunosis in Minton in 2018? Use the data in Table 3.1 to justify your response. (1-2 sentences) (2 marks)

Q18. The laboratory recommends switching to vancomycin. Would vancomycin be expected to have a bacteriostatic or bactericidal effect on the causative bacterium? Briefly justify your response. (2-3 sentences) (2 marks)

Q14. Further testing confirms that the causative bacterium is catalase positive, and a positive test result was observed when a BactiStaph test was performed. What is the most likely identity of the causative bacterium?