molecular epidemiology of bordetella pertussis by pulsed-field gel electrophoresis profile: cincinnati, 1989-1996.reported cases of pertussis have increased in the united states, with peaks occurring every few years. bordetella pertussis isolates collected in cincinnati from 1989 to 1996 were analyzed with pulsed-field gel electrophoresis (pfge), to evaluate trends. among 496 isolates, 30 pfge profiles were identified; 32% were cyxxi-010, the profile that predominated each year. eighteen profiles (198 strains) were identified in 1989-1992, 20 profiles (197 strains) were identified during the 1993 epidemic, ...200111294667
measures to control an outbreak of pertussis in a neonatal intermediate care nursery after exposure to a healthcare worker.hospitalized premature infants are particularly vulnerable to morbidity and mortality from pertussis. effective prevention and investigative and control measures are not well described.200616755471
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