Which of the following diseases is also known as break-bone fever?

Correct option is A

Ans: (a) Dengue Sol. Dengue is commonly known as break-bone fever due to the severe muscle and joint pain that accompanies the infection. Dengue fever is caused by the Dengue virus, which is transmitted by Aedes mosquitoes.
Explanation of each option:
· (a) Dengue: Correct answer. Dengue is called break-bone fever because of the severe pain in the muscles and joints, which feels like the bones are breaking.
· (b) Yellow fever: Yellow fever is a viral disease transmitted by mosquitoes, but it is not known as break-bone fever. It causes fever, jaundice, and bleeding.
· (c) Q-fever: Q-fever is caused by the bacterium Coxiella burnetii and typically affects the lungs, liver, and heart, not causing the severe pain associated with break-bone fever.
· (d) Typhoid: Typhoid fever is caused by the bacterium Salmonella typhi and does not have the symptoms of break-bone fever. It causes high fever, abdominal pain, and gastrointestinal issues.