About half of all cases of shingles occur in individuals of what age or older?

The correct answer is that about half of all cases of shingles occur in individuals 60 years or older. This age group is significant because the risk of developing shingles increases with age. The varicella-zoster virus, which causes shingles, typically remains dormant in the body after a person has had chickenpox. As the immune system weakens with age, there is a greater likelihood that the virus will reactivate and cause shingles.

Statistics show that the incidence of shingles sharply rises in those over the age of 60, making it a critical point for preventive measures such as vaccination. Understanding this demographic helps healthcare providers prioritize immunization strategies and educate patients about the risks associated with shingles as they age.