THE WHO, WHAT, WHERE, WHEN, (S)WHY(NE FLU): Epidemiology is the 'upon' 'people' 'study' (from Greek)- an aspect of public health that brings us all the way from genome sequences of viruses found in wastewater, all the way up to 'how much money should we spend on a vaccine for this disease?'. Public health essentially concerns itself with a population- it may encounter clinical signs or individual experience, but unlike other biological fields, the 'public' takes a general study, not to predict the lived experience of a select individual, but rather the patterns, risk factors, predictors, interventions, rates, statistics and more that govern our societies, countries, world and beyond. Public Health encompasses epidemiology as both a noun (a collection of knowledge about disease, both infectious and non communicable, and how risk factors or interventions can prevent or increase rates of ill heath outcomes) and a verb (a toolset to deal with the qu...