Hannah Ratner

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An annual summary of susceptibility patterns for the predominant clinical isolates from hospitalized patients can be of considerable assistance in selecting antimicrobial agents for sepsis of unclear etiology, as well as for guiding empiric therapy for other serious infections. Yearly summaries of the susceptibility patterns of the predominant clinical(More)
We used a thermonuclease test to presumptively identify Staphylococcus aureus directly in blood cultures on the same day that a smear of the broth showed gram-positive cocci in clusters. There were no discrepancies between the identification of S. aureus directly from 250 blood cultures and identification by the tube coagulase test which was performed on(More)
Focused microbiologic surveillance by specific hospital intensive care units (ICUs) revealed important differences in the occurrence of pathogens among units and at different times. Moreover, there were striking differences between the antibiogram summaries from certain ICUs and those from the hospital as a whole. Accordingly, an ongoing focused(More)
SV40 was first identified as a contaminant of poliovaccines used from 1955 until 1963. Recently, SV40 has been detected in several human tumors. The virus detected in human tumors often contained only one 72-bp enhancer in the regulatory region, in contrast to the SV40 originally isolated from poliovaccines, which contained two 72-bp enhancers. The origin(More)
The CAMP (Christie-Atkins-Munch-Petersen) test is commonly used for the presumptive identification of Streptococcus agalactiae (Lancefield group B). Using 350 clinical isolates of beta-hemolytic streptococci, we compared a 30-min spot CAMP test with the standard overnight CAMP test and the Lancefield precipitin test. We found 99% agreement among all three(More)
lavobacterium meningosepticum is an opportunistic pathogen of low virulence found in the hospital environment in water-containing equipment. Of primary importance is its role in outbreaks of neonatal meningitis which tends to be severe with a high mortality rate and serious sequelae. Changing all equipment concerned with humidifying or administering gases(More)
In laboratory experience with a heterogenous group of 26 human ocular fungal isolates, brain-heart infusion broth proved to be the most useful medium for isolation. Although Candida and Fusarium species grew out within four days of inoculation, one fourth of the cultures did not become positive until 14 to 19 days had elapsed. In an animal model of(More)