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A comment on Mystery in Wuhan: recovered coronavirus patients test negative then positive. Parent comment

Re:Mystery in Wuhan: recovered coronavirus patients test neg... by im3w1l on Friday March 27, 2020 @02:13PM (#22705257)
The PCR can detect if there is virus in the swab. But the swab may not have scooped up any virus even though the person had some.
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Re:Mystery in Wuhan: recovered coronavirus patients test neg... by hprotagonist on Friday March 27, 2020 @02:41PM (#22705539)
my longstanding argument against theranos, by the way (like, since 2005), was "look. if i go down to the beach with a bucket and take a bucket of water and put it in my super accurate shark detector van, it doesn't mean the beach is safe to swim at!"
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Re:Mystery in Wuhan: recovered coronavirus patients test neg... by zerocrates on Friday March 27, 2020 @03:47PM (#22706150)
To be fair at some level that's an argument against blood testing in general.
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Re:Mystery in Wuhan: recovered coronavirus patients test neg... by hprotagonist on Friday March 27, 2020 @04:19PM (#22706443)
not really. it's just an admission that sampling frequency matters.
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Re:Mystery in Wuhan: recovered coronavirus patients test neg... by daotoad on Friday March 27, 2020 @02:51PM (#22705645)
Unless you dilute the water until it becomes homeopathic anti-shark water.
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Re:Mystery in Wuhan: recovered coronavirus patients test neg... by baxtr on Friday March 27, 2020 @02:39PM (#22705517)
That’s right!
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