Related Questions

Dengue fever is spread by-------
Which of the following disease does not spread through the air?
An important factors in the spread of disease in when people fail to practice proper hygiene.
The number of people diagnosed with dengue fever ( which is contacted from the bite of an infected mosquito ) in Bangladesh this year is twice the number diagnosed last year . The authorities have concluded that measures to control the mosquito population have failed in the region. All of the following , if true , would cast doubt on the authorities' conclusion EXCEPT-

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