iris123 14,423 Posted December 28, 2020 38 minutes ago, iris123 said: Actually saw another German article yesterday about the PCR test and some comments from one producer calling for the RKI to be bolder in their statements and say that not all the daily infected number released were infectious.... Against this background, Landt advocates a rethinking by the authorities: "It would be wise if the test results were published with an evaluation," says Landt. If a person has tested positive for the coronavirus, but is not at all or only slightly infectious, then the authorities could say, for example, that contacts should be avoided. A quarantine would only be ordered if the risk of infection is high. “Unfortunately, you don't dare to do that in public,” says Landt, who especially wishes for “more courage” in this regard from the Robert Koch Institute. background Olfert Landt comments on the “sensitivity” and “specificity” of PCR diagnostic tests as follows: “A distinction is made between analytical and diagnostic values, which unfortunately are often confused. The diagnostic sensitivity is the safe detection limit - it is usually a little under ten viruses - and can be determined with dilutions. The diagnostic specificity describes the property not to falsely detect other pathogens; this can be shown experimentally with samples of other pathogens. Both values can be checked by every laboratory. The diagnostic values are based on a comparison of two methods; if the comparison test is somewhat more sensitive, the test misses the smallest amount and has a poorer diagnostic sensitivity; if the comparison test is a little less sensitive, the test is credited with “false positive” results that mathematically lead to a poorer diagnostic specificity. Since all tests differ slightly, these values are never 100 percent. A specificity below 100 percent is falsely proclaimed as the occurrence of false positive test results. In fact, PCR results are almost always correct, but sometimes represent a viral load so low that the subjects are neither sick nor infectious. PCR detects the genome of the pathogen and not a disease. Typically, PCR is done when symptoms are present to determine who the pathogen is. With coronavirus, there are symptomless people with high levels of the virus who can infect others - for this reason, testing people without symptoms makes sense. Positive coronavirus laboratory results are based on the detection of two virus genes and are therefore doubly secured. " https://www.fuldaerzeitung.de/fulda/corona-streit-pcr-test-hersteller-molbiol-olfert-landt-mut-panik-robert-koch-institut-berlin-90132220.html Share this post Link to post
DC2 10,664 Posted December 28, 2020 (edited) 1 hour ago, iris123 said: PCR results are almost always correct, but sometimes represent a viral load so low that the subjects are neither sick nor infectious. With coronavirus, there are symptomless people with high levels of the virus who can infect others The first sentence is spot on (assuming the swabs have been taken properly and have not subsequently been contaminated). The second is either dubious or incorrect. Edited December 28, 2020 by DC2 1 Share this post Link to post
iris123 14,423 Posted December 28, 2020 Science in 5 with the lovely Dr Maria van Kerkhove https://mobile.twitter.com/mvankerkhove?lang=de Share this post Link to post
Blupanther 19,411 Posted December 28, 2020 Ferguson and Hancock have been out measuring the snow... 7 2 Share this post Link to post
racers and royals 7,155 Posted December 28, 2020 Today’s UK Hospital Covid 19 reported deaths England 318 48732 Scotland not reported (4472) Wales 15 (3383) NI 20 (1271) total 353 - last Monday 207 Share this post Link to post
wealdstone 3,013 Posted December 28, 2020 1 hour ago, DC2 said: The first sentence is spot on (assuming the swabs have been taken properly and have not subsequently been contaminated). The second is either dubious or incorrect. PWW is always right!! Well he thinks he is !! Blu will have a graph to prove it anyway 1 Share this post Link to post
Badge 4,659 Posted December 28, 2020 24 minutes ago, wealdstone said: PWW is always right!! Well he thinks he is !! Blu will have a graph to prove it anyway Sorry to be a thicko but what's PWW Share this post Link to post
racers and royals 7,155 Posted December 28, 2020 53 minutes ago, racers and royals said: Today’s UK Hospital Covid 19 reported deaths England 318 48732 Scotland not reported (4472) Wales 15 (3383) NI 20 (1271) total 353 - last Monday 207 All UK Covid 19 deaths reported today- Hospital 353 other 4 total 357 Share this post Link to post
wealdstone 3,013 Posted December 28, 2020 9 minutes ago, racers and royals said: All UK Covid 19 deaths reported today- Hospital 353 other 4 total 357 Can PWW confirm that they were all over 80 and were ill anyway Share this post Link to post
DC2 10,664 Posted December 28, 2020 54 minutes ago, wealdstone said: Can PWW confirm that they were all over 80 and were ill anyway No, but the government will in its statistics. Care to look? 1 Share this post Link to post
iris123 14,423 Posted December 28, 2020 (edited) Seems the anit-vaxxers were right. Latest news here is the 101 year old woman who was vaccinated the other day is infertile !!!! In other news, it seems 8 care workers at a home in Stralsund have been given 5 times more vaccine than the correct amount !!!! Edited December 28, 2020 by iris123 Share this post Link to post
ruffdiamond 5,714 Posted December 28, 2020 19 minutes ago, iris123 said: In other news, it seems 8 care workers at a home in Stralsund have been given 5 times more vaccine than the correct amount !!!! How on earth did that happen,,, were they watching Professor Ferguson's models on the telly or something? Share this post Link to post
iris123 14,423 Posted December 28, 2020 1 minute ago, ruffdiamond said: How on earth did that happen,,, were they watching Professor Ferguson's models on the telly or something? Seems each was given the whole contents of a vial, which apparently holds 5 doses !! But surely there should have been some training ? Share this post Link to post
ruffdiamond 5,714 Posted December 28, 2020 2 minutes ago, iris123 said: Seems each was given the whole contents of a vial, which apparently holds 5 doses !! But surely there should have been some training ? What, you mean like 'Health & Safety' stuff? 1 Share this post Link to post