Final answer:
Screening is the correct public health intervention when identifying individuals with unnoticed health risks or asymptomatic diseases, involving procedures like mammograms and PSA tests.
Step-by-step explanation:
When a nurse is involved in identifying individuals with unrecognized health risk factors or asymptomatic disease, the public health intervention being applied is screening. Screening aims to detect diseases such as cancer in people who do not yet have noticeable symptoms. It is a proactive approach to health care that can lead to early detection and treatment, improving health outcomes. Examples of screening include mammograms for breast cancer, PSA tests for prostate cancer, and colonoscopies for colon cancer. These procedures are essential in catching diseases in their earliest, most treatable stages, often before symptoms are apparent. Public health organizations, like the CDC, rely on methods such as NNDSS for monitoring diseases of public importance, which guides health policies and intervention strategies.