1. How is dengue fever transmitted?
Answer: Bite of an infected female Aedes mosquito. Thus the correct option is 4. Dengue fever is mainly spread by the bite of infected Aedes mosquitoes, which includes A. aegypti and A. albopictus mosquitoes. A mosquito becomes infected when it bites a person who has dengue in his or her blood.
Answer: For patients presenting during the first week after fever onset is called incubation period. Dengue begins abruptly after a typical incubation period of 5–7 days, and the course follows 3 phases namely febrile, critical, and convalescent. Hence, the correct option is A.
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