A 26-year-old male has
returned from a backpacking trip to India. It is a week since arriving back in
Britain. He has had fever for two weeks and has been treated with an antibiotic
for a few days whilst in India. He does not know the name of the drug used.
On examination he is febrile, has a few rose spots on his abdomen and
splenomegaly. What source is the most likely to
provide a positive culture in view of the fact that he has been exposed to
antibiotics?
