A pandemic is a widespread outbreak of a disease that affects an unusually high proportion of the population.

 A pandemic is a widespread outbreak of a disease that affects an unusually high proportion of the population. Pandemics can occur due to a variety of pathogens, including viruses, bacteria, and fungi. The most well-known examples of pandemics are the flu pandemics that have occurred throughout history. The most recent pandemics is COVID-19 caused by the SARS-CoV-2 virus, which was first identified in Wuhan, China, in December 2019 and has since spread to become a global pandemic. Pandemics can have significant effects on society, including widespread illness and death, economic disruption, and changes to daily life.