This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Cat scratch disease is characterized by? 
Select and explain. 
A. Caused by a virus, B. Regional lymphadenopathy is prominent, C. More common in adults, D. All of the above
B: Regional lymphadenopathy is prominent
Answer: B: Regional lymphadenopathy is prominent 
Explanation: Ans. is `b' i.e. Regional lymphadenopathy is prominentCat-scratch disease (CSD) is a common and usually benign infectious disease caused by the bacterium Baonella henselae, a fastidious, intracellular, gram-negative bacteria. cases are benign and self-limiting, but lymphadenopathy may persist for several months after other symptoms disappear. The disease usually resolves spontaneously, with or without treatment, in one month.