Complex sentence: He elaborated on this experience further in an interview with Marc Maron, explaining that he had contracted a methicillin-resistant "Staphylococcus aureus" (MRSA) infection which his immune system could not fight due to stress.
Split into simpler sentences: He elaborated on this experience further in an interview with Marc Maron. He told Maron he contracted a methicillin-resistant "Staphylococcus aureus" (MRSA) infection which his immune system could not fight due to stress.