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A number of posts on Facebook and articles shared to the platform include a graphic of what appear to microscope images of red blood cells. Above the images in the graphic is the claim German Doctor Finds Vaxxed Blood Shows Signs of ‘Stacking’, Typical of Blood Cancers. The graphic refers to a widely shared video by controversial US radio host Stew Peters and self-styled medical expert Jane Ruby . Peters and Ruby have previously published vaccine-related misinformation. Here they share yet another false claim: that vaccines against Covid-19 cause Rouleaux formation in the blood. But what is Rouleaux formation or stacking and is it anything to worry about? No link between vaccine and ‘stacking’, stacking isn’t dangerous The graphic is from an August 2021 episode of the Stew Peters Show where Ruby claimed a German naturopath , Bärbel Ghitalla , had found evidence of Rouleaux formation in the blood of some of her patients who had been vaccinated against Covid-19. But Rouleaux formation is not necessarily an indicator of poor health. It is described as stacking of red cells on top of one another in columns. This may occur in people with various health conditions but is not necessarily a sign of poor health or a means of diagnosing a condition. Science Direct, a site which aggregates medical journals, books, and other technical publications, cites several sources and says: Rouleaux formation is typically seen in varying degrees in wet preparations of whole blood. When Reuters fact-checked Peters’ claims, several experts said the slides from the show did not indicate anything significant. Prof Marie Scully , a consultant haematologist from University College London Hospitals, told Reuters that Rouleaux is non-diagnostic on its own and for any association with vaccination to be significant, it would require other abnormal laboratory or clinical parameters. Even if Rouleaux formation suggested any health concerns, these images do not confirm any link between Rouleaux formation and any vaccine against Covid-19. A spokesperson from the British Society for Haematology added : Most of the images shown in the video are not normal blood films. Some are electron microscopy, others look to be fluorescent, and some are unrecognisable. The fact that the speaker doesn’t know the difference suggests that she is not a medical doctor. Don’t trust claims from repeat offenders, like Stew Peters or Jane Ruby Peters regularly publishes false claims about Covid-19 and has been fact-checked numerous times, including by AFP Fact Check , Politi-Fact , USA Today , Lead Stories and Snopes . His previous false claims have included endorsing the use of a miracle Covid-19 treatment which the US Food and Drug Administration has called dangerous and potentially life threatening. Ruby , who uses the title Dr Jane Ruby, has also made various false claims in the past. She is not a registered medical doctor – a now-deleted LinkedIn page reveals that Ruby earned a doctorate of education. Her Twitter account was also suspended for violating Twitter rules . Her most notorious claim on another episode of Stew Peters’s show was that Covid-19 vaccines were intentionally designed to make people literally magnetic. But vaccines do not cause magnetism , intentionally or otherwise, and this absurd claim has been widely debunked. Peters and Ruby have shared widely and easily debunked misinformation many times. Because of this their claims should not be trusted.
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