Which group does pathogenesis exclude in its definition?

Pathogenesis refers to the biological mechanism or processes that lead to the development of disease. This includes understanding how causal agents, such as pathogens or genetic mutations, contribute to the onset of disease and how these processes result in subsequent tissue damage or dysfunction.

Preventive health measures, however, focus on actions taken to prevent the onset of disease rather than the mechanisms by which a disease develops after an initial trigger. While preventive measures are crucial in public health and individual health strategies, they do not fall within the scope of pathogenesis, which is specifically concerned with the progression and development of disease after its initiation.

In summary, while pathogenesis encompasses environmental factors, causal agents of disease, and subsequent tissue damage, it does not include preventive health measures, as these aim to stop disease before it starts rather than explain how it manifests.