Older adults experience increased vulnerability to infections or other diseases that accompany a primary illness or physical condition; this is referred to as comorbidity. It describes the decreases in a senior’s immune system that expose them to “secondary” infections.

This also combines with their natural increase in physical frailty. Many times an older person’s initial affliction begins with a fall, triggering a chain reaction of health issues that leads to serious threats to their physical – or mental – welfare.