Jon Stewart has tested positive for COVID-19 and will not host The Daily Show this week, returning instead on August 12. In his absence, correspondent Michael Kosta will take over hosting duties, featuring guests like author Roxane Gay and actor Ed Helms. Stewart's return to the show earlier this year was marked by a commitment to host Monday nights, while other correspondents handle the rest of the week. His return has reportedly boosted the show's ratings. Stewart's long tenure at The Daily Show has significantly shaped late-night television, paving the way for many current hosts. The show continues to adapt its hosting strategy amid ongoing health concerns related to COVID-19.