<div dir="ltr"><div>I agree, this is a peculiar and worrisome strategy, given what the field has learned in just a short amount of time. </div><div><br></div><div>I could see if the reporter mistook an "antibody" test for an "antigen" test, but they do say the test is blood based, indicating that this indeed is an Ab test. You are correct, if they want to test for ongoing infections, a PCR based test is the way to go. Ab tests have been notoriously inconclusive, given that there are many false positives and false negatives. False positives might reflect exposure to other corona viruses, while false negatives might indicate that the antigens used in the tests to detect the Abs are not specific to those produced by the individual, or that the antigen used in the assay loses its biologically relevant structural conformation.</div><div><br></div><div>Given the health issues that current and former rikishi face, such as diabetes and hypertension, it is so crucial that the NSK get this "perfect", so that we can protect all involved in our beloved sumo culture. I love the historical culture of sumo and what sumo represents, but that doesn't mean the NSK can not rely on the latest medical diagnostic technologies! </div><div><br></div><div>If someone has ties to the NSK, please advise them that this reported screening approach is questionable at best, and that they adopt a more reliable primary screen for COVID-19. I'd be happy to provide introductions within Japan to make this happen, though I'm sure that the NSK has access themselves that they can, and should pursue to ensure that they are doing everything possible to minimize the risk of COVID-19 infections.</div><div><br clear="all"></div><div><div class="gmail_signature" dir="ltr" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div>Sukubidubidu<br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br><div class="gmail_quote"><div class="gmail_attr" dir="ltr">On Tue, May 19, 2020 at 8:33 PM <<a href="mailto:sumo@paketjapan.com">sumo@paketjapan.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div dir="ltr"><div>Hi Jeff, hope you're keeping safe.</div><div><br></div><div>Interesting article, but intrigued as to why they would use an antibody test.</div><div><br></div><div>It may be useful for tracing spread and exposure, but doesn't give much info on active infections and false negative rate may be substantial.</div><div><br></div><div>Most other professional sporting bodies around the world that I am aware of are testing athletes with tests that detect the RNA of the virus.</div><div><br></div><div>Not sure what is to be gained for the rikishi by doing the antibody test, other than there are some forms of it that give you a result within 15 minutes. Given above caveats though, this is not really an advantage when trying to get your sport active again by having comprehensive test results, especially when there have been confirmed positive infections amongst your athletes and staff.</div><div><br></div><div>Hmm.</div><div>When it comes to the Sumo Kyokai though, I suppose<br></div><div>"Theirs not to reason why ..."</div><div><br></div><div>Best to all the Sumo ML members and families.</div><div><br></div><div>Cheers,</div><div>Puchashuzon<br>
</div><div><br></div><div><br></div><br><div class="gmail_quote"><br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">
Date: Tue, 19 May 2020 10:02:23 -0400<br>
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To: Sumo Mailing List <<a href="mailto:sumo@webtrek.com" target="_blank">sumo@webtrek.com</a>><br>
Subject: [sumo] Sumo: JSA begins coronavirus testing for wrestlers,<br>
stablemasters<br>
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