New serotypes of group B streptococci isolated from human sources.

فراوانی سروتایپ‌های کپسولی استرپتوکوکوس گروه B جدا شده از نمونه های بالینی بر اساس ژنوتایپینگ

  Background: Group B Streptococci (GBS) or Streptococcus agalactiae is one of the most common causes of sepsis and meningitis in neonates and of invasive diseases in pregnant women. It can also cause infectious disease among adults with underlying medical conditions like immunocompromised individuals. Polysaccharide capsule is an important virulence factor. Nine GBS serotypes (Ia, Ib, II to VI...

The prevalence of 027 variation in B group Sallmonella serotypes isolated in Iran

Maternal Carriage and Neonatal Colonization of Streptococcus agalactiae in Tabriz, Northwest Iran

Group B Streptococcus (GBS) is a major cause of severe systemic and local infections in newborns. This study was performed to evaluate the presence of GBS in pregnant women and their newborns in Tabriz, Iran. Vaginal specimens were collected from 965 women who were candidate for vaginal delivery for bacteriological study of group B streptococci. Several samples from various sites of the newborn...

Characterization of Salmonellae isolated from different animal and human sources by PCR and resistance trends

Salmonella is one of the most important zoonotic pathogens with many virulence factors playing a major role in its pathogenesis. The aims of this study were to detect spvA, int2 and invC virulence genes of different Salmonella serotypes isolated from various clinical animal and human sources, and to investigate antibiotic resistance patterns among these serotypes. Using a PCR assay, a total of ...

The emergence of the group B streptococci as significant and prevalent agents in human perinatal and neonatal infections

The emergence of the group B streptococci as significant and prevalent agents in human perinatal and neonatal infections is relatively recent (1) and has stimulated renewed interest in the biology of these organisms. However, their antigenic composition has been studied for several decades. Shortly after characterizing this serological group of streptococci (2), Lancefield identified three dist...