This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Medicine
Reactive bradycardia with fever- 
Select and explain. 
A. Typhoid, B. Malaria, C. Tuberculosis, D. Brucellosis
A: Typhoid
Answer: A: Typhoid 
Explanation: Normally , for every 1 degree celsius rise in temperature, pulse should increase by 10 beats per minutes. In typhoid, the pulse is often slower than would be expected from the height of the temperature ,i.e; a relative bradycardia. Reference Harrison20th edition pg 876