| the extent and importance of sensitization by opportunist mycobacteria in lagos, nigeria. | 3505 school children aged 6 to 15 years were tested with ppds and at the same time one of the following tuberculins, namely, ppdg, ppdpl, ppda, ppdf and ppdy. the tuberculins were prepared from human tubercle bacillus, the gause organism, m. marinum, m. avium, m. fortuitum and m. kansasii respectively. ppdy, ppda and ppdg gave more reactions of greater than 2 mm induration than did ppds. furthermore, tests with ppdy, ppda, ppdg and ppdpl showed a significant proportion of children with reactions ... | 1977 | 414397 |
| slaves as guinea pigs: georgia and alabama episodes. | | 1984 | 11616472 |
| prevalence of toxigenic and invasive strains of escherichia coli in a hospital population. | the pathogenesis of gastrointestinal infections caused by escherichia coli has been attributed to the ability of some strains to produce exotoxins (enterotoxins) or to invade the intestinal mucosa directly. to investigate the possible role of invasiveness and of production of toxin in the pathogenesis of nonenteric e. coli infections, we studied e. coli isolated from 152 patients with urinary tract infections, bacteremia, or both. none of the isolates from urine or blood exhibited invasiveness i ... | 1975 | 1102617 |
| serologic survey of eptesicus fuscus from georgia, u.s.a. for rickettsia and borrelia and laboratory transmission of a rickettsia by bat ticks. | bats and their ectoparasites are associated with bacterial agents of unknown pathogenicity. we tested sera from 56 eptesicus fuscus from georgia against borrelia hermsii, orientia tsutsugamushi, rickettsia conorii, and rickettsia rickettsii. we detected antibodies reactive against a relapsing fever borrelia and spotted fever group rickettsia in 3/56 and 1/56 bats, respectively. we attempted to culture bartonella from the blood of these bats but were unsuccessful. in addition, we fed bat ticks, c ... | 2006 | 17249357 |