With the recent outbreak of a mosquito-borne disease called Zika, community governments have embarked on new efforts to control mosquito populations in at-risk areas of the United States. While the recent outbreak was initially detected in Brazil, Zika is also found in Africa, Southeast Asia, the Pacific Islands, various U.S. territories, and other countries in South and Central America. As of spring of 2016, the outbreak has yet to reach the continental United States, but experts anticipate its arrival as temperatures rise and mosquito populations multiply. Despite increased funding for pest control programs, many state and local officials and disease control experts are concerned that the potential disaster may not be preventable.
Which of the following statements LEAST supports the officials' and experts' concerns?