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Volume 5, Number 6—December 1999

Antimicrobial Resistance with Streptococcus pneumoniae in the United States, 1997–98

Gary V. DoernComments to Author , Angela B. Brueggemann, Holly Huynh, Elizabeth Wingert, and Paul Rhomberg
Author affiliations: University of Iowa College of Medicine, Iowa City, Iowa, USA

Main Article

Table 2

Characterization of 302 Streptococcus pneumoniae isolates that were erythromycin resistant (MICs 1> µg/ml)

Erythromycin No. of No. with clindamycin MICs of
1 15 15a 0 0 0 0
2 52 51b 0 0 0 1c
4 53 53d 0 0 0 0
8 68 68e 0 0 0 0
16 23 22f 1g 0 0 0
32 6 5h 0 0 0 1i
64 85 0 0 1j 1k 83l

aFour isolates characterized for ermAM and mefE; all four ermAM-/mefE+.
bSeven isolates characterized; all seven ermAM-/mefE+.
cThis isolate was ermAM+/mefE-.
dSeven isolates characterized; one ermAM-/mefE-; six ermAM-/mefE+.
eSeven isolates characterized; all seven ermAM-/mefE+
fFour isolates characterized; all four ermAM-/mefE+.
gThis isolate was ermAM-/mefE-.
hThree isolates characterized; all ermAM-/mefE+.
iThis isolate was ermAM+/mefE-.
jThis isolate was ermAM-/mefE+.
kThis isolate was ermAM-/mefE-.
lThirty-eight of these isolates were characterized; 26 were ermAM+/mefE-; 12 were ermAM+/mefE+.

Main Article

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