What Wikipedia has to say- COVID-19 misinformation
Some of McCullough’s public statements contributed to the spread of COVID-19 misinformation.[5][4]
McCullough testified before a committee of the Texas Senate in March 2021, posted to YouTube by the Association of American Physicians and Surgeons, in which he made false claims about COVID-19 and COVID-19 vaccines, including that people under 50 years of age and survivors do not need the vaccine and that there is no evidence of asymptomatic spread of COVID-19.[25]
Posted on the Canadian online video sharing platform Rumble, McCullough gave an interview in April 2021 to The New American, the magazine of the right-wing John Birch Society, in which he advanced anti-vaccination messaging, including falsely claiming tens of thousands of fatalities attributed to the COVID-19 vaccines.[45] In May 2021, McCullough gave an interview in which he made claims about COVID-19 and COVID-19 vaccines which were “inaccurate, misleading and/or unsupported by evidence,” including that survivors cannot be re-infected and so do not require vaccination and that the vaccines are dangerous.[26]
During television appearances, McCullough has contradicted public health recommendations, including when asked about the aggressive spread of COVID-19 among children, by suggesting that healthy persons under 30 had no need for a vaccine,[27][46] and when asked about the relative merits of vaccination-induced immunity versus “natural” (survivor) immunity, by disputing the necessity of vaccinations to achieve herd immunity.[22][47][48][4]