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epidemiology of microbial keratitis in southern california. a multivariate analysis.two hundred twenty-seven cases of microbial keratitis reported in nonreferral county practice were studied. the staphylococci, pseudomonas aeruginosa and streptococcus pneumoniae, were the major isolates. a multivariate statistical model was developed to evaluate possible predisposing and outcome determinants. several racial and age-related relationships were shown. the interaction of numerous local ocular and systemic factors played a fundamental role in causing disease. the authors found signi ...19873317183
microbial fouling of reverse-osmosis membranes used in advanced wastewater treatment technology: chemical, bacteriological, and ultrastructural analyses.biofouling of reverse-osmosis membranes was investigated at an advanced wastewater treatment facility. cellulose diacetate membranes operated for approximately 4,000 h became uniformly coated with a mucilaginous fouling layer. the fouling material was approximately 93% water by weight, and nearly 90% of the dehydrated residue was organic in composition. calcium, phosphorous, sulfur, and chlorine were the major inorganic constituents detected. protein and carbohydrate represented as much as 30 an ...19836847180
bacterial isolates from california sea lions (zalophus californianus), harbor seals (phoca vitulina), and northern elephant seals (mirounga angustirostris) admitted to a rehabilitation center along the central california coast, 1994-1995.in 2 yr of bacteriologic culturing of 297 california sea lions (zalophus californianus), 154 harbor seals (phoca vitulina), and 89 northern elephant seals (mirounga angustirostris) stranded alive along the california coast, the most frequent isolates from inflammatory lesions in live animals were escherichia coli, streptococcus viridans, listeria ivanovii, beta-hemolytic streptococcus spp., and enterococcus spp. this is the first report of l. ivanovii isolation from a marine mammal. the common i ...19989732032
trends in the etiology of infectious corneal ulcers at the f. i. proctor foundation.we analyzed laboratory results from corneal ulcers seen from 1976 to 1999 at the francis i. proctor foundation, a referral center in san francisco, to determine the relative frequencies of pathogens and to analyze for trends in frequencies of the most common pathogens. the results were compared with a previous study of corneal ulcers seen from 1948 to 1976 at the same institution.200415097130
relatedness of cytotoxins from geographically diverse isolates of moraxella bovis.to determine whether amino acid sequence variation exists in the moraxella bovis (m. bovis) cytotoxin (mbxa) from geographically diverse m. bovis isolated in the united states, mbxa was amplified and sequenced. the mbxa deduced amino acid sequence from m. bovis originally isolated in california, washington, north carolina, and georgia, as well as reference strains of m. bovis isolated at the national animal disease laboratory, ames, ia, usa, all encoded a nearly identical 927 amino acid protein. ...200717540518
moraxella bovoculi sp. nov., isolated from calves with infectious bovine keratoconjunctivitis.eighteen isolates of a gram-negative coccus (strain 237(t)) were cultured from the eyes of dairy and beef calves affected with infectious bovine keratoconjunctivitis (ibk; 'pinkeye') in northern california, usa, during summer 2002. these isolates had near full-length (1397 bp) 16s rrna gene sequences that clustered into three groups with 99.9 % sequence similarity. on the basis of 16s rrna gene sequence, the isolates were most closely associated with moraxella bovis and moraxella ovis in clade i ...200717392208
combined parenteral and oral administration of oxytetracycline for control of infectious bovine keratoconjunctivitis.to determine whether combined parenteral and oral administration of oxytetracycline would ameliorate a herd outbreak of infectious bovine keratoconjunctivitis (ibk) and to compare efficacy of this regimen with that of subconjunctival administration of procaine penicillin g.19989491167
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