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2021-09-23
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Morning.
my 5 year old daughter just PCR tested negative for covid-19 still got a hacking cough though 8-/
what is the false -ve rate on those things
or just failed to poke the swab in far enough...
I think its the top lip constantly bathed in snot and/or saliva that distressed her the most
it was done in a car by my wife at a drive-through testing centre
so not really professionally, no
we don't seem to do professional swabbing in the uk
thats a foreign concept
my brother is in France, and he says the pharmacist alway does the swabbing
yeah I suppose so
hard to know innit
here in NL you can do simple at home test and if they are positive you are supposed to get a proper test done by someone who knows what they are doing.
I read something that said the false positive and negative rates āshouldā be less than 5%, whatever that means.
> someone who knows what they are doing seems to be anathema in the UK
yeah google pointed me at https://www.gavi.org/vaccineswork/false-negative-how-long-does-it-take-coronavirus-become-detectable-pcr
well, if she has symptoms that could be attributed to covid I'd say you have waited long enough
All four of us had the same symptoms as each other. One tested positive, the rest tested negative. False positive rate is estimated at 0.8-4.3% (I couldnāt find anything that specific for false negatives), so I wonder if the positive one was wrong.
Itās possible that itās a coincidence - that we all had a cold, and my son also had covid, with no extra symptoms (he coughed a little, so we got him tested just to be on the safe side), but with 30,000+ cases a day at the time, 1% false positives is >300/day š¤·
cross contamination is surely an issue when it has been scaled up so far
over and above laboratory condition uncertainty
My 4 year old kid has had that cough too for a while, and apparently a few other of his classmates too have it.
I think it's the normal "let's shove all the kids together, start of new school term, cough" type of thing
given the new symptonms for delta, how could you possibly tell
oh how appropriate https://unherd.com/thepost/covid-or-cold-a-test-is-your-best-bet/
> If we agree that I definitely had something, then the chance I had Covid given that I had cold symptoms was (1.3/(1.3+6.1))*100, or about 17%. Thatās high: almost exactly the chance of rolling a 1 on a six-sided die, something I doĀ https://unherd.com/2021/07/what-warhammer-taught-me-about-life/. Iād be very nervous about, say, going to the pub with that chance of having the virus.
I was making the test for my 7 years old son last week and I would say it is hard to make. I have no idea if I made it correctly. He had bad cough as well.