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The Swine Flu is diagnosed by taking a flu swab from both nostrils. I work in a busy ER and the most common and accurate method seems to be a Nasal wash. A few drops of saline are put in both nostrils and suctioned out. This is then sent to lab and a person is diagnosed with either Influenza A or B or is negative.
Technically not everyone who tests positive for influenza is being checked for the swine flu, but either Influenza A or B. The CDC has a random sampling rule for deciding which positive flu washes or swabs are sent for confirmation.
I am not sure of the percentages but I believe that approximately 80% of Influenza A is the Swine Flu.
My guess is that the CDC is just including all of those who test positive as having the Swine flu.

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15y ago

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