1. A relatively avirulent strain of hemolytic streptococci injected into the skin of normal rabbits seldom diminished and usually increased in number during the first 5 hours after inoculation but after 12 hours save in exceptional instances the organisms diminished rapidly and disappeared. 2. Hemolytic streptococci injected into the skin of normal rabbits passed rapidly from the site of inject...

We describe the first two cases of continuous ambulatory peritoneal dialysis-related peritonitis associated with Lancefield group G beta-hemolytic streptococci in the literature. Both patients presented with abdominal pain and turbid dialysis effluent with or without fever. Both had concomitant gastrointestinal tract disturbance. Both did not respond to intraperitoneal cefazolin and tobramycin ...

1. A chemically pure hemolysin-leucocidin has been isolated from beta hemolytic streptococci, but not from other species of bacteria studied. 2. It does not give rise to antibodies, but precipitates immune sera against hemolytic streptococci, and is therefore a hapten. 3. A highly purified sample of S. H. up to a dilution of 1:128,000 hemolyzes red blood cells. Its hemolytic activity is not spe...

"Streptococcus milleri" is an unofficial name that has been applied to a group of streptococci which, although basically similar, show various hemolytic, serological, and physiological characteristics. The species name Streptococcus anginosus has recently been recognized as the approved name for these organisms. Streptococci known as "S. milleri" have been implicated as etiologic agents in a va...

When washed streptococci were incubated in a phosphate buffer containing MgSO4 and maltose (Bernheimer's basal medium) and centrifuged, no hemolytic activity was detected in the supernatant. Although incubation of the spent medium with carrier oligonucleotide did not yield active hemolysin, the mixture turned to be significantly hemolytic, upon ethanol precipitation and dehydration. Oxygen stab...

A prospective multicenter study on invasive infections caused by beta-hemolytic streptococci was performed over 6 months and involved 42 centers from 16 cities in Argentina. Among 33 isolates recovered, 9 group G Streptococcus isolates (39.1%) and 2 group C Streptococcus isolates (20%) exhibited resistance to tetracycline and harbored the tet(M) gene. Genealogical analysis revealed that tetracy...

Streptococcus dysgalactiae subsp. equisimilis belongs to the β-hemolytic group C and G pyogenic group of streptococci. Here, we report the draft genome of the S. dysgalactiae subsp. equisimilis strain C161L1 from Vellore, a region in southern India with a high incidence rate of S. dysgalactiae subsp. equisimilis infection. This genome is 2.1 Mb long, with a 39.82% G+C content, and encodes 2,022...

Rabbits immunized intravenously with living culture or nucleoproteins of non-hemolytic streptococci react to subsequent intracutaneous inoculations with homologous streptococci with smaller and harder lesions than are shown by normal animals similarly inoculated; and they do not develop the general manifestations of hypersensitiveness such as are shown by animals previously inoculated into the ...