In the study of upper respiratory infections, nose and throat cultures for beta hemolytic streptococci3 are essential. Since group A streptococci are implicated in human respiratory infections more than other groups, it is important that streptococci recovered on culture be identified as belonging to group A or not. The finding of streptococci which belong to groups other than A in the nose or ...

1. Hemolytic streptococcus has been found in 100 per cent of the throats of patients with scarlet fever during the 1st week of the disease. 2. The average length of time that these organisms are present in the throat varies from 10 to 20 days. 3. No morphological or cultural characteristics peculiar to the hemolytic streptococcus from scarlet fever can be demonstrated. 4. Ten immune sera have b...

A test employing three fluorogenic 4-methylumbelliferyl substrates and the lectin of Dolichos biflorus was developed for the identification of beta-hemolytic streptococcal colonies associated with throat cultures. This non-serological method is unique in that it permits the accurate identification of groups C, F, and G streptococci, as well as groups A and B streptococci. The method is rapid, s...

Human strains of double zone beta hemolytic streptococci produced mastitis in 11 quarters of 4 young cows. Following the acute phase of the infection, the streptococci were eliminated from 6 quarters at various intervals. However, sufficient positive infections were maintained throughout the period of observation to show that the human strains can produce the same degree of infection as bovine ...

It is our opinion that this medium is useful for rapid isolation and identification of group A streptococci. If it is not possible to test betahemolytic colonies by the precipitin test, it is obvious from our results that one can assume with a fair degree of certainty that the growth is group A streptococci. Beta-hemolytic streptococci other than group A numbered only 7.0% in the present series...

The effects of selective media and atmosphere of incubation on the isolation of group A beta-hemolytic streptococci were evaluated. Sheep blood agar medium with gentamicin (2.5 or 5.0 mug/ml) was inferior to antibiotic-free sheep blood agar medium. This resulted from the partial restriction of group A streptococcal growth on gentamicin medium. Recovery of beta-hemolytic streptococci from specim...

INTRODUCTION Group B streptococci are a well-known cause of early and late onset sepsis. In neonates and older children gram-negative bacteria are mostly found in urinary tract infections and urosepsis. In adults predisposing factors for group B streptococci urinary tract infection may include diabetes mellitus and chronic renal failure. CASE PRESENTATION We present a rare case of a five-mont...

The aim of the present study was to compare the recolonization pattern of mutans streptococci on densely colonized teeth with and without fixed orthodontic appliances after treatment with a 40 per cent chlorhexidine (CHX) varnish (EC 40, Explore). Healthy subjects free of carious lesions requiring fixed orthodontic appliance treatment but with high bacterial mutans streptococci saliva counts we...

The respiratory tract encounters 10,000 liters of inhaled air every day. Recently, data have emerged on innate lung immunity and key pathways relevant to biomarker detection therapeutic targeting strategies in acute chronic diseases. lungs serve as the main link between host external environment. Thus, multiple lines defense protect from potential pathogens. Impaired can lead detrimental outcom...

This study was done to evaluate the prevalence of rectovaginal colonization with group B streptococci among pregnant women who delivered in our center. Also maternal and neonatal complications were compared between colonized and noncolonized groups. Rectovaginal cultures were obtained from 1197 pregnant women with gestational ages greater than 24 weeks who were admitted to the labor room of Zei...