(Laboratory diagnosis)

Nasal washings, gargles, and throat swabs are the specimens needed for the laboratory diagnosis and should be obtained within 3 days after onset of symptoms. Which of the following are the best specimens for diagnostic testing?

(Laboratory diagnosis)

It is the preferred for diagnosis of influenza since:

(1) Can detect and distinguish influenza A and B, different strains (e.g., H5N1) and other respiratory viruses

(2) Rapid (<1 day), sensitive and specific

(Laboratory diagnosis)

Allow for rapid detection of multiple

pathogens in a single test

(Laboratory diagnosis)

For viral culture, which usually takes about 3-10 days, isolation methods of choice for influenza viruses commonly uses what?

(Laboratory diagnosis)

Sample held at _____°C until inoculation into cell culture since freezing and thawing reduce the ability to recover virus

(Laboratory diagnosis)

If storage will exceed 5 days, sample should be frozen at -70°C

(Laboratory diagnosis)

Commercially available rapid influenza antigen detection tests: Take less than 15 minutes; vary in sensitivity and

specificity, and a negative result does not rule out influenza infection.

(Management)

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(Management)

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(Management)

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