Immune

Question 1

Normal changes

Answer 1

responses to influenza, parainfluenza, pneumococcus, and varicella vaccines are less effective

inflammation often presents atypically in older individuals (low-grade fever and minimal pain)

thymus mass decreases steadily

T-cell activity declines & more immature T-cells are present in the thymus

decline in cell-mediated immunity

T lymphocytes are less able to proliferate in response to mitogens

Serum immunoglobulin (antibodies) concentration is not significantly altered

Question 2

Low-grade fever

Answer 2

temperature is slightly elevated between 37.5°C and 38.3°C and lasts for more than 24 hours. Among the geriatric population

Question 3

Immunosenescence

Answer 3

aging of the immune system

depressed immune response