Final answer:
The challenges with curing AIDS include the hidden viruses that can multiply if medication is stopped. The Berlin Man/London patient was cured through a bone marrow transplant from a donor with a rare genetic mutation.
Step-by-step explanation:
The challenges with curing AIDS include the fact that the virus can hide in the body's immune cells and multiply again if a patient stops taking medication. Researchers are working on developing drugs to kill these hidden viruses. In the case of the Berlin Man/London patient, known as Timothy Ray Brown, he received a bone marrow transplant from a donor with a rare genetic mutation that made them immune to HIV. This transplant essentially replaced his immune system with one that could resist the virus, leading to a cure.