sentences:  Dengue, a vector-borne disease usually carried by mosquitoes, killed 158 people that year in Cuba, including 101 children under 15.Tensions between the two countries, coupled with confirmed U.S. research into entomological warfare during the 1950s, made these charges seem not implausible to some people.The United States seriously researched the potential of entomological warfare (EW) during the Cold War.