Toon Aerts tested positive for the substance Letrozole on the 19th of January and has soon stopped racing, although not suspended. The UCI has issued an update on his case.
Recently, Aerts argued about the possibility of a recovery shake having been contaminated with the substance, with the Belgian appearing the crowd of a recent race noticeably without having cut his air ever since, leaving no detail to chance. He's lost his contract with Baloise - Trek Lions in the meantime, and this weekend at the Koppenbergcross a group of his supporters demanded answers from the UCI.