Enhanced detection and serotyping ofStreptococcus pneumoniaeusing multiplex polymerase chain reaction

Enhanced detection and serotyping of Streptococcus pneumoniae using multiplex polymerase chain reaction

PURPOSE Methods for quick and reliable detection of Streptococcus pneumoniae are needed for the diagnosis of pneumococcal disease and vaccine studies. This study aimed to show that sequential multiplex polymerase chain reaction (PCR) is more efficient than conventional culture in achieving S. pneumoniae-positive results. METHODS Nasopharyngeal (NP) secretions were obtained from 842 pediatric ...

Detection of alpha-thalassemias by multiplex polymerase chain reaction.

Although alpha-thalassemia is the most common genetic abnormality in the world, there is currently no routine laboratory method to definitively identify individuals who are affected. We describe a rapid and simple method that utilizes deletion-sensitive primers to amplify normal DNA sequences. Deletions involving the regions responsible for most of the alpha-thalassemia cases in the US prevent ...

Specific detection of Salmonella spp. by multiplex polymerase chain reaction.

Three sets of oligonucleotide primers were used in the polymerase chain reaction (PCR) assay to detect Salmonella species. phoP primers specific to the phoP/phoQ loci of coliform pathogenic bacteria such as Salmonella, Shigella, Escherichia coli, and Citrobacter species served as presumptive indicators of enteric bacteria. In addition to the phoP primers, the Hin and the H-1i primers, which tar...

Rfbo157 by Multiplex Polymerase Chain Reaction

A rapid method for detection of Escherichia coli O157: H7 using multiplex PCR was developed. Two oligonucleotide primer pairs were used for simultaneously detection of vt encoding verotoxin genes for virulence factor and rfbO157 encoding the O-antigen specific for E. coli O157: H7. Multiplex PCR generated two products of 215 bp and 420 bp for vt and rfbO157, respectively. Multiplex PCR detected...

Detection of Babesia ovis Using Polymerase Chain Reaction.