This review seeks to evaluate certain aspects of "healthcare governance" during the Covid 19 pandemic, in particular the damage caused by policies based on unscientific views. Indeed, in addition to a health crisis, the pandemic coincided with a crisis of global governance that undermined scientific medicine, health systems and the communication of scientific data. This was partly driven by scientific denialism, exhibited most prominently by then-US president Donald Trump, with disastrous results in terms of health policy. Here we examine articles appearing in Science, N Engl J Med, Sci Am and Front Public Health that adopt a political stance against such denialism, breaking with their traditional neutrality. The analysis addresses the effects of the pandemic on health systems and the general population, as well as on the ways in which science is produced and applied, together with its contradictions. It looks at how political and economic considerations resulted in inconsistent and contradictory models of scientific development that were to have disastrous effects on citizens' health. In response to scientific denialism and the damage it can cause, we commend the OECD report entitled PISA 2018 Assessment and Analytical Framework, which highlights the role of education in the development of scientific literacy in the younger generations. We also consider the work of the American Association for the Advancement of Science (AAAS), which recognises and celebrates the value of science in ensuring accessibility to knowledge and scientific endeavour in society. Our analysis suggests that scientific knowledge should be a fundamental tenet, equal to that of individual freedom, of political governance. In this way, health policies can respond more adequately to global threats.