DISEASE X is the codename given by the World Health Organisation to a pathogen currently unknown to science that could cause havoc to humankind. Emerging infections are sending us multiple warnings that another Disease X is looming. We’ve had SARS in 2002, H5N1 bird flu in 2004, H1N1 ‘swine flu’ in 2009, MERS in 2012, Ebola in 2014, Zika in 2015 and now COVID-19. These events are not freak events, but are happening continually, and at an increasing cadence.