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The number of people diagnosed with dengue fever (contracted from the bite of a mosquito) in north Indian is twice the number diagnosed last year. Municipal authorities have concluded that measures to control the mosquito population have failed in this region. Which one of the following statements, if true, does not contradict this conclusion?
A high proportion of the affected population has returned from neighboring countries where dengue is prevalent
More cases of dengue are now reported because of an increase in the municipal office’s administrative efficiency
Many more cases of dengue are being diagnosed this year since the introduction of a new and effective diagnostic test
The number of people with malarial fever (also contracted from mosquito bites) has increased this year
- A contradicts the conclusion of the municipal authorities. So, A is not the correct choice.
- B is an incorrect choice because there is no data in the passage relating the reporting of cases and the efficiency of the administrative capabilities of the municipal authorities.
- C is also incorrect as it contradicts the conclusion of the municipal authorities.
D is the correct choice as both malarial fever and dengue fever are caused by mosquito bite. If dengue fever had increased because of some other reason other than that concluded by the municipal authorities, then there would not have been increase in the people with malarial fever. This statement supports the conclusion of the municipal authorities.