Αρχειοθήκη ιστολογίου

Τετάρτη 2 Ιανουαρίου 2019

What specimen(s) should be collected when testing patients for influenza?

  1. Clinicians should collect upper respiratory tract specimens from outpatients for influenza testing as soon after illness onset as possible, preferably within 4 days of symptom onset (A-II).
    • Nasopharyngeal specimens should be collected over other upper respiratory tract specimens to increase detection of influenza viruses (A-II).
    • If nasopharyngeal specimens are not available, nasal and throat swab specimens should be collected and combined together for influenza testing over single specimens from either site (particularly over throat swabs) to increase detection of influenza viruses (A-II).
    • Mid-turbinate nasal swab specimens should be collected over throat swab specimens to increase detection of influenza viruses (A-II).
    • Flocked swab specimens should be collected over nonflocked swab specimens to improve detection of influenza viruses (A-II).
  1. Clinicians should collect nasopharyngeal (optimally, as for outpatients), mid-turbinate nasal, or combined nasal–throat specimens from hospitalized patients without severe lower respiratory tract disease for influenza testing as soon as possible (A-II).
  2. Clinicians should collect endotracheal aspirate or bronchoalveolar lavage fluid specimens from hospitalized patients with respiratory failure receiving mechanical ventilation, including patients with negative influenza testing results on upper respiratory tract specimens, for influenza testing as soon as possible (A-II).
  3. Clinicians should not collect or routinely test specimens for influenza from nonrespiratory sites such as blood, plasma, serum, cerebrospinal fluid, urine, and stool (A-III).
  4. Clinicians should not collect serum specimens, including single or paired sera, for serological diagnosis of seasonal influenza virus infection for clinical management purposes (A-III).

https://www.idsociety.org/practice-guideline/influenza/

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Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,

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