| expanding habitat of the imported fire ant (solenopsis invicta): a public health concern. | residents in the southeastern united states would hardly describe life with the aggressive imported fire ant as peaceful coexistence. the continued spread of these insects has produced agricultural problems, changes in the ecosystem, and increasing numbers of subjects with sting sequelae, including hypersensitivity reactions, secondary infections, and rare neurologic sequelae. evolutionary changes have facilitated their expansion northward into virginia and westward into california, and increasi ... | 2000 | 10756216 |