Mark Sheperdigian delves into the "The Great Bed Bug Resurgence", in a recent blog post of the Pest Management Professional. He reviews the impact of the common bed bug and the tropical bed bug; seems one or the other is dominant depending upon the location world wide. Read the article here:  Bed Bugs:  A Tale of two Species

Principal author of the Australian Bed Bug Code of Practice, Stephen Doggett, clarified in the comments section: