Which of the following decrease during dengue?

The count of platelets decreases as a result of dengue fever. 

The body typically has a platelet count of 1.5 to 4 lacs. However, this count may go down as low as 20,000 to 40,000 in dengue patients. When the platelet count is low or decreases, the body fails to form clots, which makes it difficult to manage the spread of infection and potentially cause bleeding.