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Volume 8, Number 2—February 2002

Research

Antibiotic Resistance Patterns of Bacterial Isolates from Blood in San Francisco County, California, 1996-1999

Susan S. Huang*†Comments to Author , Brian J. Labus†‡, Michael C. Samuel†‡, Dairian T. Wan†, and Arthur L. Reingold†‡
Author affiliations: *University of California San Francisco, San Francisco, California, USA; †California Department of Health Services, San Francisco, California, USA; ‡University of California Berkeley, Berkeley, California, USA;

Main Article

Table 3

Proportionala resistance of highly resistant organisms by age,b San Francisco County, 1996 to 1999

Age group (years) Methicillin-resistant (%)
Staphylococcus aureus Vancomycin-resistant (%)
Enterococcus faecium Penicillin- resistant (%)
Streptococcus pneumoniae
≤10 14.3 (98) 22.2 (9) 19.3 (83)
10-19 8.1 (37) 50.0 (4) 20.0 (5)
20-29 21.7 (83) 50.0 (8) 0 (26)
30-39 17.6 (250) 42.1 (19) 13.4 (142)
40-49 21.8 (353) 41.4 (29) 8.7 (138)
50-59 24.8 (234) 43.8 (32) 11.5 (78)
60-69 29.1 (227) 45.5 (44) 10.2 (49)
70-79 24.8 (258) 55.9 (34) 15.6 (64)
≥80 22.8 (237) 41.2 (17) 17.2 (64)

aProportional resistance refers to the proportion of isolates of that species that is resistant to the indicated antibiotic.

bTotal number of species isolates given in parentheses. Percentages for small numbers of total isolates should be cautiously interpreted.

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