Would ID₅₀ and LD₅₀ Necessarily Be the Same for a Given

question 130

Multiple Choice

Would ID₅₀ and LD₅₀ necessarily be the same for a given virus? Why or why not?

• A) Yes, because the number of viruses that infect 50% of a test population should also kill 50% of that test population.
• B) No, because a virus may be highly infectious (very low ID₅₀ value) but only marginally lethal (very high LD₅₀ value). A prime example of this is the rhinovirus (common cold virus).
• C) No, because very few viruses are lethal, yet many are highly infectious. The 2 values should ALWAYS be different.
• D) Yes, because what we're actually describing here is infection/killing of individual CELLS, not of entire organisms. If a cell is infected, it will always be killed.

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Definitions:

Efficiency

The state of optimizing resources to achieve the highest possible output with the least waste of inputs.

Tax Efficiency

A measure of how much of an investment's return is left after taxes, indicating the effectiveness of minimizing tax liability through investment choices.

Revenue

The total income generated by the sale of goods or services before any costs or expenses are deducted.

FICA Taxes

Taxes levied by the Federal Insurance Contributions Act in the United States to fund Social Security and Medicare programs, deducted from workers' paychecks.