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 A
Explanation
A. Crohn's disease can cause granulomatous inflammation that leads to strictures in the bowel, increasing the risk of obstruction.
B. While Crohn's disease often affects the small intestine, ulcerative colitis typically affects the colon, and both can lead to obstructions, but the nature of Crohn's lesions contributes more to this risk.
C. Abdominal pain and diarrhea are symptoms but do not specifically explain obstruction risk.
D. Dietary triggers may exacerbate symptoms but are not a primary reason for increased obstruction risk in Crohn's.
Correct Answer is B
Explanation
A. While spaghetti and garlic toast provide carbohydrates, they lack sufficient protein and vitamins necessary for healing.
B. Eggs are a good source of protein, essential for tissue repair, and orange juice provides vitamin C, which is important for collagen synthesis and healing.
C. Steak and potatoes provide protein and carbohydrates, but the combination may be less balanced in terms of vitamins compared to eggs and orange juice.
D. Tomato soup and grilled cheese offer comfort but are less optimal for nutritional needs related to wound healing, lacking sufficient protein.
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