This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
Which of the following statement (s) is/are true about dengue fever - 
Select and explain. 
A. | Hematocrit, B. Increase in Platelet, C. Negative tourniquet test, D. Vector (Aedes aegypticus) usually bites in night time
A: | Hematocrit
Answer: A: | Hematocrit 
Explanation: <p> In dengue fever , hematicrit increases, platelet decreases, positive tourniquet test ,vector usually bite in day time. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:236-255. <\p>