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Microbiology

Image:  Clostridium difficile colonies after 48 hours’ growth on blood agar plate. By competitive exclusion, healthy gut flora help limit growth of pathogenic yeasts and bacteria. Overgrowth of C. difficile in the gut can cause pseudomembranous colitis, and is the most frequently identified cause of antibiotic-associated diarrhea. (Image courtesy of Dr. Holdeman, Centers for Disease Control & Prevention (CDC; image ID #3647), and Wikimedia.)

Robust Method Developed for Microbiome Analysis

Scientists have developed a technique for genome sequence data analysis that enables to more efficiently and accurately identify differences between metagenomes for a variety of bacterial communities, which can help to study, diagnose, and treat many human diseases. In a new study, the method was successfully tested on intestinal microbiota.  More...
16 Mar 2016
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Laboratory Test for Zika virus Authorized for Emergency Use

Zika fever is a disease caused by Zika virus that is spread to people primarily through the bite of an infected Aedes species mosquito. The most common symptoms of Zika are fever, rash, joint pain, and conjunctivitis.  More...
15 Mar 2016
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Elevated C-Reactive Protein Found in H7N9 Influenza Infection

The avian influenza H7N9 virus can cause cytokine overproduction and result in severe pneumonia and acute respiratory distress syndrome; and many studies have focused on hypercytokinemia during avian influenza infection.  More...
13 Mar 2016
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Chagas Urine Nanoparticle Test Correlates with Parasitemia Levels

Early diagnosis of reactivated Chagas disease in human immunodeficiency virus patients could be lifesaving. In Latin America, the diagnosis is made by microscopical detection of the Trypanosoma cruzi parasite in the blood, a diagnostic test that lacks sensitivity.  More...
13 Mar 2016
Image: Streptococcus mutans colonies growing on Mitis Salivarius Bacitracin agar showing convex, pale blue colonies with granular frosted glass appearance (Photo courtesy of Drs. Rajan and Shivani Dhawan).

Oral Bacteria Linked to Risk of Intracerebral Hemorrhage

Physicians have an increased understanding of patients entering the hospital for acute stroke, and the association between certain types of stroke and the presence of the oral bacteria centronuclear myopathies gene-positive Streptococcus mutans.  More...
09 Mar 2016
Image: Scanning electron micrograph of Leptospira sp. Bacteria (Photo courtesy of the CDC - US Centers for Disease Control and Prevention).

Asymptomatic Individuals May Shed Infective Leptospira Bacteria in Their Urine

An international team of molecular microbiologists has assembled a comprehensive, cross-species genomic comparison of all 20 known species of Leptospira and determined that a pool of asymptomatic individuals was shedding the bacteria in their urine.   More...
09 Mar 2016
Image: Photomicrograph of Cryptococcus neoformans using a light India ink staining preparation. Life-threatening infections caused by the encapsulated fungal pathogen Cryptococcus neoformans have been increasing steadily over the past 10 years because of the onset of AIDS, and the expanded use of immunosuppressive drugs (Photo courtesy of CDC/Dr. Leanor Haley).

Clinical Laboratory Services Introduce Diagnosis of Invasive Fungal Infections

Globally, the incidence of invasive fungal infections is more than two million per year, with mortality rates that can exceed 50% and the need for improved diagnostic tools to quickly identify invasive fungal infections is recognized worldwide.   More...
08 Mar 2016
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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.