What Is Not a Reason for False-Negative TST Result

question 48

Multiple Choice

What is not a reason for false-negative TST result?

• A) Exposed to TB infection 6 weeks ago
• B) Had TB infection many, many years
• C) Had an inactivated vaccine 2 weeks ago
• D) Has a weakened immune system
• E) Patient is less than 6 months old

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Definitions:

Baleen

A filter-feeding system inside the mouths of baleen whales, it consists of keratin plates for filtering small food items from water.

Dorudon

An extinct genus of medium-sized whales that lived approximately 40 to 33 million years ago.

Extinct Whales

Whale species that no longer exist, providing insight into evolutionary biology and environmental changes.

Homology

The existence of shared ancestry between a pair of structures, or genes, in different species.