1. A method is presented for the quantitative comparison under various conditions of the activity of the lipolytic enzyme of the hemolytic steptococcus. The speed of acid production as shown in the color change from pH 8.0 to 7.2, when the living streptococcus is suspended in association with ethyl butyrate, is considered to be indicative of the amount of ferment elaborated by the organism. 2. ...

Group A beta-hemolytic streptococcus and Staphylococcus aureus are the 2 most common pathogens implicated in secondary invasive bacterial disease after varicella. We describe a 3-month-old male infant from British Columbia, Canada, who presented on day 5 of varicella skin rash with fever, seizures, lethargy, and evidence of intracranial hypertension. A prominent subdural empyema was documented,...

"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...

Streptococcus intermedius, a member of the Streptococcal anginosus group of alpha-hemolytic streptococci, remains a notable infectious agent causing necrotizing pneumonia and abscesses. We report a case of a young male with pulmonary nodules found to have Streptococcus intermedius and no other underlying hepatic or dental history who was treated with ceftriaxone and avoided surgical interventio...

An improved procedure for the isolation and purification of the hemolysin produced by a group B streptococcus was developed, and the inactivation of partially purified hemolysin by several enzymes was studied. Hemolysin obtained in buffer containing starch and Tween 80 was inactivated by subtilisin and alpha-amylase, suggesting that the hemolysin may consist of a protein hemolytic moiety comple...

In the previous paper the technical aspects of the mucin-clot prevention test which was standardized by McClean (1) have been described. Friou and Wenner (2) using the mucin-clot prevention test have demonstrated the clinical significance of an inhibitory substance in human serum capable of neutralizing an enzyme elaborated by a strain of hemolytic streptococcus. The amount of inhibitory substa...

Recently Tillett and Garner (1) have demonstrated that broth cultures of hemolytic streptococci of human origin rapidly liquefy the fibrinclot of human plasma. Cultures of other species of bacteria obtained from human beings fail to exhibit this property. Tillett, Edwards and Garner (2) further found that the plasma clot from patients convalescent from acute hemolytic streptococcal infections w...

1. Both focal and diffuse glomerulitis has been produced in rabbits by the injection directly into the left renal artery of suspensions of heat killed hemolytic streptococci. 2. Similar lesions in the glomeruli could not be obtained by the injection of suspensions of bismuth oxychloride into the left renal artery of normal rabbits. 3. The acute glomerulitis occurred in only about one-half of th...