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A really good overview of antigen rapid diagnostic tests - these will transform our ability to test for #COVID19.
https://www.sciencemag.org/news/2020/05/coronavirus-antigen-tests-quick-and-cheap-too-often-wrong …
1/4
A few things though: “What everyone wants is for a test to be cheap, accurate, and fast,” says Geoffrey Baird, a laboratory medicine specialist at the University of Washington, Seattle. “You can only ever have two of those.” Not true - e.g. Ebola: https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(15)61042-X/fulltext … 2/4
A lot of mistakes in this paragraph - all of this simply isn't true because of mixing of sensitivity/specificity + calc mistakes. For these types of tests, we assume high specificity, but lower sensitivity - but that doesn't lead to the results mentioned in this paragraph. 3/4pic.twitter.com/BuYppZFRH0
"Given how readily the SASR-CoV-2 spreads, “a misdiagnosis is worse than no diagnosis,”" I disagree with this - for the intended POC usage of RDTs, this is less of a concern. I'm very optimistic about RDTs - they won't be perfect, but they'll make a big difference 4/4
Finally!
obviously they cannot be used for the same goal of pcr/antibody tests, but if they catch someone also the 30% of cases and then you trace and isolate the contacts it will be a game changer.
give these tests on the highway you will know where he is going to be
2/ these tests are about geography, not sensivity.
Do respiratory infections sometimes produce an IgA or IgM or salivary or cell-mediated immune response, without detectable IgG ? And can immunity nevertheless be conferred?
My name is Talita and i’m Marina’s mother. She’s a 1 year n 8 month old baby who was born with a rare disease called Spinal Muscular Atrophy and needs the most expensive medication in the world. Help share the campaign to get her medication! PLEASE HELP
http://lnkd.in/d5BJJgN
Please help me!
1 dolar = 6 reais (our money in Brazil)
We have less than a month.
Help me save my daughter!
Share, donate!! 
pic.twitter.com/wKNef2RDnb
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