A 25-year-old man presented with fever, malaise, and a rash on his chest, arms, and feet. Which of the following will be most useful for a rapid diagnosis?

A 25-year-old man presented with fever, malaise, and a rash on his chest, arms, and feet. Which of the following will be most useful for a rapid diagnosis?



A) bacterial culture
B) microscopic examination of blood
C) serological test for antibodies
D) serological test for antigen
E) viral culture


Answer: serological test for antibodies


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