Publications

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prospective study of enteropathogens in children with diarrhea in houston and mexico.during a 22-month period, 595 children with diarrhea and 210 age-matched controls attending clinics in houston (367 children) and mexico (438) were prospectively evaluated for enteric pathogens. enteropathogens associated with disease were shigella (18%), rotavirus (14%), salmonella (9%), toxigenic escherichia coli (6%), and others (12%), including 14 proteus isolates that caused rounding of adrenal cells. enteropathogens were isolated from a greater (p less than 0.001) number of children with d ...1978211215
treatment of meningomyelocele in indigent and nonindigent patients. 19744589495
gram-negative, aerobic, enteric pathogens among intestinal microflora of wild turkey vultures (cathartes aura) in west central texas.the prevalence of gram-negative bacterial species in the intestines of 20 apparently healthy turkey vultures (cathartes aura) was determined. edwardsiella tarda, plesiomonas shigelloides, salmonella, and arizona hinshawii (salmonella arizonae) were each recovered from 15% of these birds. turkey vultures may be important reservoirs of these bacterial pathogens.19817032423
gram-negative enteric bacillary meningitis: a twenty-one-year experience.we reviewed our experience with gram-negative enteric bacillary meningitis in neonates and infants from 1969 through 1989. ninety-eight patients were identified. their ages were from 1 day to 2 years with a median of 10 days. in 25 patients (26%), predisposing factors were identified, the most common of which were neural tube defects and urinary tract anomalies. the causative agents were escherichia coli (53%), klebsiella-enterobacter species (16%), citrobacter diversus (9%), salmonella species ...19938419603
intracranial complications of acute mastoiditis.oral antibiotic use may have changed the incidence and microbiology of otitic intracranial complications. we reviewed cases of acute mastoiditis to document: (1) incidence of intracranial complications; (2) risk factors; and (3) identify pathologic organisms.200010767461
methenamine mandelate-sulfamethizole combination; evaluation in management of urinary tract infections. 196414119853
proteus bacteriuria is associated with significant morbidity in spinal cord injury.retrospective chart review.200717179975
prevalence of ctx-m beta-lactamases in philadelphia, pennsylvania.ctx-m beta-lactamases were thought to be rare in the united states, but a recent study in texas showed that up to 70% of extended-spectrum beta-lactamase (esbl)-containing members of the enterobacteriaceae family were ctx-m positive (j. s. lewis, m. herrera, b. wickes, j. e. patterson, and j. h. jorgensen, antimicrob. agents chemother. 51:4015-4021, 2007). we used pcr to detect ctx-m in all 291 extended-spectrum cephalosporin-resistant gram-negative bacteria isolated in our laboratory during 200 ...200919587301
first report of the emergence of ctx-m-type extended-spectrum beta-lactamases (esbls) as the predominant esbl isolated in a u.s. health care system.ctx-m-type extended-spectrum beta-lactamases (esbls) have become increasingly common worldwide, with the notable exception of the united states, where tem- and shv-type esbls have appeared to predominate. we have noted the emergence of esbls in our health care system (the university health system in san antonio, tx), especially in escherichia coli isolates, that preferentially hydrolyze cefotaxime rather than ceftazidime, suggesting the possibility of ctx-m-type enzymes. microbiology laboratory ...200717724160
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