Complement deficiency has been associated with increased susceptibility to meningococcal disease. In order to determine whether special meningococcal strains caused disease in complement-deficient (CD) patients, 17 Neisseria meningitidis strains recovered from patients in the Western Cape Province, South Africa, known to be CD were compared with 124 routine isolates obtained from patients livin...

The meningococcus carriage rate is age-dependent, with a high prevalence in adolescents and young adults. This cross-sectional study aimed to estimate the oropharyngeal carriage rate of meningococcus among healthy Korean adolescents and its relationship with several population characteristics. The survey was conducted from April to May 2015 among 1,460 first-year high-school students in 9 high ...

Serogroup classifications based upon the O-somatic antigen of Shiga toxin-producing Escherichia coli (STEC) provide significant epidemiological information on clinical isolates. Each O-antigen determinant is encoded by a unique cluster of genes present between the gnd and galF chromosomal genes. Alternatively, serogroup-specific polymorphisms might be encoded in loci that are encoded outside of...

BACKGROUND AND OBJECTIVES Salmonella is an important food-borne pathogen in humans. Strains of Salmonella spp. that producing extended-spectrum β-Lactamases have become a concern in medicine regarding both antimicrobial treatment and infection control program. The objective of this study was to describe the antibiotic susceptibility, ESBL production and determining the prevalence of the bla CTX...

We analyzed and compared Clostridium difficile strains isolated from diarrheic stools of 49 human immunodeficiency virus (HIV)-negative and 50 AIDS patients. Our results suggest that distribution patterns of serogroups are different in these two populations. Serogroup C (which has been previously reported to be very resistant to antimicrobial agents) represents 66.0 and 18.4% of the isolates fr...

Background: Segregation of Escherichia coli (E. coli) into the phylogenetic groups was observed in experiments so that group B2 contained enteropathogenic E. (EPEC) strains and extraintestinal pathogenic (ExPEC). Objectives: This study aimed to identify extended-spectrum Cephalosporins resistant isolated from stool healthy children under 10 years old. Methods: One hundred broad-spectrum were co...

BackgroundThe incidence of invasive meningococcal disease in the UK decreased by approximately four times from 1999 to 2014, with reductions serogroup C and B disease. Lower was attributable implementation conjugate vaccine 1999, through direct indirect protection, but no implemented against Meningococcal Carriage surveys 1–3 (UKMenCar1–3), conducted 2000, 2001, were essential for understanding...

The DNA sequence of the O-antigen gene clusters of Escherichia coli serogroups O62, O68, O131, O140, O142, and O163 was determined, and primers based on the wzx (O-antigen flippase) and/or wzy (O-antigen polymerase) genes within the O-antigen gene clusters were designed and used in PCR assays to identify each serogroup. Specificity was tested with E. coli reference strains, field isolates belon...

background and objectives: salmonella is an important food-borne pathogen in humans. strains of salmonella spp. that producing extended-spectrum β-lactamases have become a concern in medicine regarding both antimicrobial treatment and infection control program. the objective of this study was to describe the antibiotic susceptibility, esbl production and determining the prevalence of the bla ct...