COVID-19 is widely regarded as the first instance of a real Disease X after the WHO introduced the concept in 2018. When SARS-CoV-2 emerged as an unknown pathogen causing a global pandemic, it exemplified the scenario that Disease X was meant to represent—an unpredictable, novel threat requiring rapid global response and adaptation
COVID-19 is widely regarded as the first instance of a real Disease X after the WHO introduced the concept in 2018. When SARS-CoV-2 emerged as an unknown pathogen causing a global pandemic, it exemplified the scenario that Disease X was meant to represent—an unpredictable, novel threat requiring rapid global response and adaptation