Marcus de Brun
Dr. Marcus de Brun is a Dublin-based general practitioner known for his controversial views on the Covid-19 pandemic, including his characterization of the vaccine for children as a 'crime against humanity.' He gained notoriety for his vocal criticisms of government health measures, including lockdowns and mask mandates, and for advocating alternative treatments like Ivermectin and hydroxychloroquine. His social media activity led to a fitness-to-practice inquiry by the Irish Medical Council, where he faces allegations of professional misconduct for undermining public health guidelines. Dr. de Brun has claimed his comments stem from personal experiences with patient deaths during the pandemic and has expressed frustration with the authorities' handling of the crisis.
Not in the pool (under ¢1).
Recent news mentions
Dr Marcus de Brun admitted that a tweet he posted during the Covid-19 pandemic was not appropriate.
GP accepts some of his social media posts during Covid-19 pandemic were not appropriate – The Irish Times
Ireland· 2026-02-12
Dr Marcus de Brun is facing a fitness to practise inquiry for his outspoken criticism of the State’s handling of the pandemic and his comments on Covid-19 vaccines.
GP who described Covid vaccine for children as ‘crime against humanity’ faces inquiry – The Irish TimesIreland· 2025-09-23