| avian hosts of st. louis encephalitis virus in pine bluff, arkansas, 1991. | an investigation of the extent of st. louis encephalitis (sle) virus activity in the avian population in pine bluff, arkansas was conducted from august 30, 1991 through september 5, 1991, following an sle epidemic that resulted in 25 human cases. a total of 363 birds of 33 species were captured with ground-level mist nets at four sites along the northern edge of the city. no viruses were isolated from the serum of these birds, but 91 birds (25%) of 11 species had detectable neutralizing antibody ... | 1993 | 8352391 |
| entomologic investigations of an epidemic of st. louis encephalitis in pine bluff, arkansas, 1991. | an epidemic of st. louis encephalitis (sle) occurred in jefferson county, arkansas during july-august 1991. at least 26 human cases were involved, with 25 cases in the town of pine bluff. twelve isolates of sle virus were obtained from mosquitoes collected in pine bluff between august 13 and 24: 11 from pools of culex pipiens quinquefasciatus, resulting in a minimum infection rate of 1.6 per 1,000 (n = 6,768) for this subspecies, and one isolate from a pool of 22 mosquitoes identified as cx. (cu ... | 1993 | 8352390 |
| epidemiologic aspects of a st. louis encephalitis epidemic in jefferson county arkansas, 1991. | in 1991, the first epidemic of st. louis encephalitis (sle) ever reported in arkansas resulted in 25 cases in pine bluff (attack rate: 44 per 100,000; 95% confidence interval [ci] 28-65). to identify risk factors for sle viral infection and risk factors for neuroinvasive illness, we conducted a community-based, cross-sectional study of noninfected and asymptomatically infected persons and a case-control study of asymptomatically and symptomatically infected persons. the sle viral infection rate ... | 1993 | 8352389 |
| vector competence of aedes albopictus from pine bluff, arkansas, for a st. louis encephalitis virus strain isolated during the 1991 epidemic. | the vector competence of aedes albopictus from pine bluff, ar, was assessed for a st. louis encephalitis (sle) virus strain isolated during the 1991 epidemic. aedes albopictus were fed on hamsters with viremia levels of 10(4.6)-10(4.9) vero cell plaque-forming units (pfu)/ml. at 7 and 15 days postbloodfeeding, transmission trials were conducted using individual suckling mice. three of 313 ae. albopictus were determined to be infected with sle virus with titers of 10(6.3)-10(7.0) pfu/mosquito. at ... | 1994 | 7707054 |