Phases of AIDS.
Latent phase, infection, seroconversion, AIDS
Exposure, infection, seroconversion, AIDS
Infection, seroconversion, AIDS, symptomatic AIDS
Acute phase, window phase, latency phase, AIDS
The Correct Answer is B
Choice A reason: Latent phase follows seroconversion, not precedes infection. The correct sequence—exposure, infection, seroconversion, AIDS—reflects HIV progression. This option misorders the phases, making it incorrect for AIDS development.
Choice B reason: AIDS progresses through exposure (virus contact), infection (HIV enters body), seroconversion (antibody detection), and AIDS (advanced disease). This sequence accurately describes the disease’s history, making it correct.
Choice C reason: Symptomatic AIDS is not a distinct phase; AIDS itself is symptomatic. The standard progression includes exposure, infection, seroconversion, and AIDS, so “symptomatic AIDS” is incorrect.
Choice D reason: Window phase is part of seroconversion, not separate, and acute phase is early infection. The sequence—exposure, infection, seroconversion, AIDS—is clearer, so this is incorrect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C"]
Explanation
Choice A reason: DiGeorge disease involves thymic hypoplasia or aplasia, impairing T-cell development. This is a primary cause, leading to immune deficiency, making it a correct choice for the condition’s etiology.
Choice B reason: B-cell maturation is generally preserved in DiGeorge disease, as it primarily affects T-cells due to thymic defects. T-cell issues are central, so this is incorrect for the cause.
Choice C reason: T cells cannot mature in DiGeorge disease due to thymic underdevelopment, causing severe immunodeficiency. This is a core feature of the syndrome, making it a correct choice for the cause.
Choice D reason: Humans lack a bursa; B-cell maturation occurs in bone marrow. DiGeorge affects the thymus and T-cells, not a nonexistent bursa, so this is incorrect for the cause.
Correct Answer is C
Explanation
Choice A reason: Nasal mucosa is a portal of entry for cold viruses, not the primary source of spread. Sneezing propels virus-laden droplets, infecting others, making it the greatest spread mechanism, so this is incorrect for the source.
Choice B reason: Conjunctival surfaces can be an entry point but are not the main source of spread. Sneezing disperses viruses widely through respiratory droplets, driving transmission, so this is incorrect for the greatest source.
Choice C reason: Sneezing is the greatest source of cold virus spread, as it releases aerosolized droplets containing viruses, infecting others via inhalation or surface contact. This is the primary transmission mode, making it the correct choice.
Choice D reason: Fingers spread viruses via fomites, but sneezing generates more widespread droplet transmission. Hand contact is secondary to respiratory spread, so this is incorrect for the greatest source of cold virus spread.
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