Whenever you read or hear about any recent disease outbreak affecting a large group of population you may come across a term - pandemic. But do you know what this term actually means? The word 'pandemic' is derived from a Greek word pandemos where 'pan' means all and 'demos' means population or group of people. Hence pandemic is a clinical term that means affecting all or nearly everyone in the population. Pandemic refers to a sudden outbreak (epidemic) of disease/illness that affects an entire region continent or the world due to a group of people who are susceptible (people who