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Microbiology

Image: Conidiophores of Aspergillus fumigatus (Photo courtesy of the CDC - [US] Centers for Disease Control and Prevention).

Analysis of Volatile Substances in Breath of Pneumonia Patients Confirms Fungal Infection Diagnosis

Analysis of volatile substances in the breath of patients with respiratory infections has been proposed as a novel, noninvasive, pathogen-specific approach to identifying the precise microbial cause of pneumonia.  More...
03 Nov 2014
Image: Transmission electron micrograph (TEM) reveals some of the ultrastructural morphology exhibited by a grouping of Enterovirus virions (Photo courtesy of the Centers for Disease Control and Prevention).

Rapid Molecular Test Developed for Enterovirus D68

A faster laboratory test has been developed to detect Enterovirus D68 in specimens from people with respiratory illness.   More...
02 Nov 2014
Image: An enzyme-linked immunosorbent assay (ELISA) kit for dengue virus NS1 antigen (Photo courtesy of Diagnostic Automation Inc.).

Diagnostic Test Kits for Dengue Virus Detection Evaluated

Laboratory diagnosis of dengue with a single serum specimen obtained during the acute phase of the illness requires tests to detect immunoglobulin M antibodies to Dengue virus or the virus genome.  More...
28 Oct 2014
Image: Prototype of the SP-IRIS (single particle - interferometric reflectance imaging sensor), which detects pathogens by shining light from multicolor LED sources on viral nanoparticles trapped onto the sensor surface by a coating of virus-specific antibodies (Photo courtesy of NexGen Arrays).

Device Developed for Rapid On-Site Pathogen Diagnostics

A novel nanotechnology-based prototype device can detect pathogens such as Ebola and other hemorrhagic fever viruses – quickly and on-site.  More...
26 Oct 2014
Image: Culture of Clostridium difficile from a stool sample after 24 hours of incubation on chromogenic medium forming typical black colonies (Photo courtesy of the Freeman Hospital).

Stability of Fecal Specimens for Bacterial Diagnostics Investigated

 To test for Clostridium difficile in stool specimens transported from remote geographic locations is a challenge due to long transit times, often at room temperature. More...
23 Oct 2014
Image: A commercial Fabry–Pérot interferometer or etalon (Photo courtesy (United Scientific Supplies).

New Low-Cost Technique Detects Rotavirus

A new measurement method that increases the capacity to detect biological substances such as Rotavirus using optical biosensors has been discovered and patented.   More...
22 Oct 2014
Image: Scanning Electron Micrograph of Streptococcus pneumoniae by R. Facklam, J. Carr. Cerebrospinal fluid (CSF) β-2 transferrin detection decreases after inoculation with live or ciprofloxacin-inactived S. pneumoniae. This may be due to passive adsorption via distinctive features of the S. pneumoniae cell wall not present in the other bacterial species examined (Photo courtesy of MicrobeWiki and the CDC – [US] Centers for Disease Control and Prevention).

Infection Can Lead to False Negatives for Cerebrospinal Fluid β-2 Transferrin

Researchers have found that the presence of Streptococcus pneumoniae in cerebrospinal fluid can lead to false-negative β-2 transferrin test results and misdiagnosis that may detrimentally affect healthcare decisions for patients.  More...
21 Oct 2014
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The LabMedica Microbiology channel provides the latest news in the fields of epidemiology, bacteriology, virology, and parasitology, all viewed from the unique perspective of Laboratory Medicine.
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