Epidemiology is an important tool used to study<unk>  in a population. For<unk><unk> s it helps to determine if a<unk>  outbreak is sporadic (occasional occurrence), endemic (regular cases often occurring in a region), epidemic (an unusually high number of cases in a region), or pandemic (a global epidemic).
Infectious disease epidemiology and demographics
Pneumonia epidemiology and demographics
AIDS epidemiology & demographics
Tuberculosis epidemiology and demographics
Dementia epidemiology and demographics
HIV AIDS epidemiology and demographics
Hospital-acquired pneumonia epidemiology and demographics
Coronavirus epidemiology and demographics