The "growing public health problems" of West Nile and dengue viruses in the U.S. can "serve as opportunities to pull the U.S. squarely into the global fight against these mosquito-borne viruses," a Bloomberg View editorial states. "The two illnesses have come to the U.S. courtesy of climate change and globalization," the editorial notes, writing, "No vaccines, no cures and no specific medicines exist to prevent or treat dengue or West Nile." It continues, "That is not uncommon for illnesses that predominantly affect the developing world," as "[c]ompanies with the know-how to develop such products have generally lacked the profit motive to make the necessary investments, given that sales would be mainly in poor countries."