1. The relation between hemolytic and non-hemolytic streptococci is orderly and arises from the fact that the former variety is unique while the latter is heterogeneous. 2. Analogous considerations of the classification, distribution, and pathogenicity of the streptococcus group and the pneumococcus and colon-typhoid groups show a definite parallelism. 3. These considerations suggest that uniqu...

The in vitro activity of telavancin was tested against 620 gram-positive isolates. For staphylococci, MICs at which 50 and 90% of isolates were inhibited (MIC(50) and MIC(90)) were both 0.25 microg/ml, irrespective of methicillin resistance. MIC(50) and MIC(90) were 0.25 and 0.5 microg/ml for vancomycin-susceptible enterococci and 1 and 2 microg/ml for vancomycin-resistant enterococci, respecti...

It was demonstrated by Keogh et al. (1947) and Warburton et al. (1949) that several products of bacterial cultures could be adsorbed to erythrocytes, which then could be agglutinated by sera containing antibodies to those bacterial antigens. This approach was developed in the case of a constituent of tuberculin by Middlebrook and Dubos (1948) and Rothbard et al. (1950). The work of the latter g...

Varicella is generally a benign, self-limited childhood illness; however, severe, life-threatening complications do occur. A live, attenuated vaccine exists to prevent this illness, but controversy remains concerning the need to vaccinate children for what is generally a benign, self-limited disease, although more states are currently recommending this vaccine. We report a previously healthy 3-...

The bactericidal activity of fresh raw milk from a number of cows has been tested with the non-hemolytic mastitis streptococcus. By using this organism and other means we were able to rule out the action of agglutinin. The milk of all cows examined inhibited the growth of the streptococcus for definite periods. The length of the inhibition period varied; the milk from some cows prevented growth...

OBJECTIVE The purpose of the present study was to explore the direct effects of amnion and chorion on bacterial growth in vitro including the antibacterial spectrum. Chorioamniotic membranes were obtained under sterile conditions from 13 healthy women undergoing elective cesarean section at term. Likewise, chorioamniotic membranes were obtained from 10 healthy women with spontaneous vaginal del...

A new 4-h commercial system (API 20S; Analytab Products, Plainview, N.Y.) for the identification of streptococci was compared with the conventional biochemical profile method in the species identification of alpha-hemolytic streptococci. A total of 194 clinical isolates (including 74 isolated from blood cultures, 64 isolated from wound cultures, and 56 isolated from respiratory cultures) and 20...