In the ecological model, individual health is the focus. It measures health in terms of , and improvement in health occurs by medical intervention such as prescribing . Another way of improving health in the medical model is by performing a procedure like . The public health model is also called the model. In this model, the focus shifts to health management and disease prevention. The individual is no longer the focus, and the funding shifts to community health. Hygiene, sanitation, hazardous work conditions, drug abuse, and even are issues that the public health model addresses. Since prevention is important in the public health model, , such as regular checkups and screenings, is a critical part of managing health. The primary difference between the two models is that one addresses treating individual illness, and the other addresses .