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  2. Nasopharyngeal swab - Wikipedia

    en.wikipedia.org/wiki/Nasopharyngeal_swab

    A nasopharyngeal swab is a device used for collecting a sample of nasal secretions from the back of the nose and throat. [ 1 ] [ 2 ] The sample is then analyzed for the presence of organisms or other clinical markers for disease.

  3. Staphylococcal infection - Wikipedia

    en.wikipedia.org/wiki/Staphylococcal_infection

    Staphylococcus scalded skin syndrome – Staphylococcus scalded skin syndrome is caused by toxins produced when a staph infection gets too severe. It is characterized by a fever, rash, and blisters. Methicillin-resistant Staphylococcus aureus (MRSA) – MRSA is one of the most common antibiotic-resistant strains of staph bacteria. It is more ...

  4. Staphylococcus aureus - Wikipedia

    en.wikipedia.org/wiki/Staphylococcus_aureus

    Staphylococcus aureus is a gram-positive spherically shaped bacterium, a member of the Bacillota, and is a usual member of the microbiota of the body, frequently found in the upper respiratory tract and on the skin. It is often positive for catalase and nitrate reduction and is a facultative anaerobe, meaning that it can grow without oxygen. [1]

  5. Methicillin-resistant Staphylococcus aureus - Wikipedia

    en.wikipedia.org/wiki/Methicillin-resistant...

    Colorized scanning electron micrograph of a human neutrophil ingesting MRSA. Methicillin-resistant Staphylococcus aureus (MRSA) is a group of gram-positive bacteria that are genetically distinct from other strains of Staphylococcus aureus. MRSA is responsible for several difficult-to-treat infections in humans.

  6. Coagulase - Wikipedia

    en.wikipedia.org/wiki/Coagulase

    Importantly, S. aureus is generally coagulase-positive, meaning that a positive coagulase test would indicate the presence of S. aureus or any of the other 11 coagulase-positive Staphylococci. [1] A negative coagulase test would instead show the presence of coagulase-negative organisms such as S. epidermidis or S. saprophyticus.

  7. Staphylococcus - Wikipedia

    en.wikipedia.org/wiki/Staphylococcus

    Staphylococcus species are facultative anaerobes (capable of growth both aerobically and anaerobically). [15] All species grow in the presence of bile salts. All species of Staphylococcus aureus were once thought to be coagulase-positive, but this has since been disproven. [16] [17] [18] Growth can also occur in a 6.5% NaCl solution. [15]

  8. How common are false-positive COVID tests? Experts weigh in.

    www.aol.com/lifestyle/common-false-positive...

    The accuracy of PCR tests varies, depending on when someone is tested. However, one study found that the false-negative rate can be as high as 20 percent when a person is tested five days after ...

  9. Antibiotic sensitivity testing - Wikipedia

    en.wikipedia.org/wiki/Antibiotic_sensitivity_testing

    Genetic testing, such as via polymerase chain reaction (PCR), DNA microarray, and loop-mediated isothermal amplification, may be used to detect whether bacteria possess genes which confer antibiotic resistance. [9] [23] An example is the use of PCR to detect the mecA gene for beta-lactam resistant Staphylococcus aureus. [9]