{"id":13823,"date":"2021-05-03T15:32:14","date_gmt":"2021-05-03T22:32:14","guid":{"rendered":"https:\/\/www.functionalps.com\/blog\/?p=13823"},"modified":"2021-05-03T21:50:21","modified_gmt":"2021-05-04T04:50:21","slug":"rt-pcr-ct-value-case-definition-for-the-vaccinated","status":"publish","type":"post","link":"https:\/\/www.functionalps.com\/blog\/2021\/05\/03\/rt-pcr-ct-value-case-definition-for-the-vaccinated\/","title":{"rendered":"RT-PCR Ct Value &#8211; Case Definition for the Vaccinated"},"content":{"rendered":"\n<p><strong><a href=\"https:\/\/www.cdc.gov\/vaccines\/covid-19\/downloads\/Information-for-laboratories-COVID-vaccine-breakthrough-case-investigation.pdf\">Source<\/a><\/strong><\/p>\n\n\n\n<p><em>The document linked above from the CDC raises the bar by which the RT-PCR test will find a positive result in vaccinated individuals.<\/em><\/p>\n\n\n\n<p><em>A RT-PCR Ct Value much lower than what was used to identify a non vaccinated &#8220;case&#8221; in 2020 does not offer an apples to apples comparison to 2021. <a href=\"https:\/\/www.functionalps.com\/blog\/2021\/03\/09\/kdhe-quietly-reduced-cycle-threshold-on-covid-tests\/\">RT-PCR Ct Value was lowered<\/a> relative to 2020 starting around January 7th, 2021 (from 42 to 35) and now this is evidence of an even higher bar to be considered a positive case (less than or equal to 28) once vaccinated. <\/em><\/p>\n\n\n\n<p><em>Making it more difficult to achieve a positive case means less cases.<\/em> <em>If you apply the same RT-PCR Ct value to 2020, the case numbers would decrease<\/em>.<\/p>\n\n\n\n<p style=\"text-align:center\"><strong>COVID-19 vaccine breakthrough case investigation\n<\/strong><\/p>\n\n\n\n<p style=\"text-align:center\">Information for public health, clinical, and reference laboratories\n<\/p>\n\n\n\n<p>&#8220;<strong>Case definition&nbsp;<\/strong><\/p>\n\n\n\n<p>A person who has SARS-CoV-2 RNA or antigen detected on respiratory specimen collected \u226514 days after completing the primary series of an FDA-authorized COVID-19 vaccine.&nbsp;&#8220;<\/p>\n\n\n\n<p>&#8230;<\/p>\n\n\n\n<p>&#8220;<strong>Clinical specimens for sequencing should have an RT-PCR Ct value \u226428.<\/strong>&#8220;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Source The document linked above from the CDC raises the bar by which the RT-PCR test will find a positive result in vaccinated individuals. A RT-PCR Ct Value much lower than what was used to identify a non vaccinated &#8220;case&#8221; in 2020 does not offer an apples to apples comparison to 2021. RT-PCR Ct Value [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-13823","post","type-post","status-publish","format-standard","hentry","category-general"],"_links":{"self":[{"href":"https:\/\/www.functionalps.com\/blog\/wp-json\/wp\/v2\/posts\/13823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.functionalps.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.functionalps.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.functionalps.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.functionalps.com\/blog\/wp-json\/wp\/v2\/comments?post=13823"}],"version-history":[{"count":3,"href":"https:\/\/www.functionalps.com\/blog\/wp-json\/wp\/v2\/posts\/13823\/revisions"}],"predecessor-version":[{"id":13827,"href":"https:\/\/www.functionalps.com\/blog\/wp-json\/wp\/v2\/posts\/13823\/revisions\/13827"}],"wp:attachment":[{"href":"https:\/\/www.functionalps.com\/blog\/wp-json\/wp\/v2\/media?parent=13823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.functionalps.com\/blog\/wp-json\/wp\/v2\/categories?post=13823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.functionalps.com\/blog\/wp-json\/wp\/v2\/tags?post=13823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}