The CDC annually advised to update our influenza vaccination. What is the reason for this?
The influenza virus is capable of antigenic variability.
Our influenza antibodies undergo apoptosis each year.
Differentiation
Proliferation
The Correct Answer is A
A. Antigenic variability in the influenza virus, due to mutations and genetic reassortment, necessitates annual updates to the vaccine to match circulating strains effectively.
B. While antibody levels may decline over time, they do not undergo apoptosis in a way that directly requires annual vaccination.
C. Differentiation is not relevant in this context.
D. Proliferation refers to cell division and is not a primary reason for the need to update the influenza vaccine.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Tertiary prevention involves managing and mitigating the effects of an established disease or condition, which does not apply here.
B. Secondary prevention focuses on early detection and treatment of diseases, but wearing a helmet is about preventing injury rather than detecting it.
C. None of these would imply that there is no relevant level of prevention being demonstrated, which is incorrect.
D. Primary prevention aims to prevent the onset of disease or injury, and wearing a helmet while biking is a proactive measure to prevent head injuries.
Correct Answer is B
Explanation
A. Joint immobilization may contribute to overall dysfunction but is not the primary cause of localized hypoxia in rheumatoid arthritis.
B. Vasculitis, or inflammation of blood vessels, can lead to localized hypoxia by reducing blood flow to affected areas, contributing to tissue damage in rheumatoid arthritis.
C. While blockage of veins can contribute to localized hypoxia, it is more related to vasculitis in this condition.
D. The release of synovial enzymes may contribute to joint damage but does not directly cause localized hypoxia.
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