Final answer:
When a person has infrequent symptoms or is asymptomatic, they should use preventative measures to protect themselves and others.
Step-by-step explanation:
When a person has infrequent symptoms or is asymptomatic (meaning they do not show any signs or symptoms of a disease), they should use a preventative measure to protect themselves and others.
For example, if someone is asymptomatic for a contagious disease like COVID-19, they should still wear a mask, practice social distancing, and follow other public health guidelines to prevent the spread of the disease.
Preventative measures can also include getting vaccinated, maintaining good hygiene, and avoiding contact with individuals who are sick.