The document analyzes the spread of COVID-19 conspiracy theories, particularly those linking the virus to 5G technology, across social and mainstream media from January to April 2020. It outlines how misinformation evolved from fringe claims to more widespread acceptance, driven by celebrity endorsements and media coverage, ultimately resulting in real-world actions such as arson against 5G installations. Key findings emphasize the limited initial impact of conspiracist sites, but highlight the significant role of celebrities as amplifiers of misinformation, raising concerns about journalistic responsibility and public health communication strategies.