The following is true about detection and control of newly emerging zoonotic dis
ID: 180111 • Letter: T
Question
The following is true about detection and control of newly emerging zoonotic diseases: Select one:
a. Current diagnostics are adequate for detecting new emerging agents.
b. None of the choices.
c. Metagenomics is a good tool to facilitate identification of the emerging agent.
d. Koch's postulates will easily clarify causal relationships.
e. All of the choices.
Tuberculosis granulomas are made up of:
Select one:
a. Necrotic tissue and damaged tissue containing bacteria.
b. None of the choices.
c. Organized aggregates of immune cells that surround foci of infected cells.
d. Fibrous and damaged tissue of bacterial cells.
e. Damaged tissue cells and bacteria only.
Explanation / Answer
Answer:
1). c. Metagenomics is a good tool to facilitate identification of the emerging agent.
The metagenomic approach has been a very important tool in the discovery of new viruses in environmental and biological samples. Here we discuss how these discoveries may help to elucidate the etiology of diseases and the criteria necessary to establish a causal association between a virus and a disease.
2). c. Organized aggregates of immune cells that surround foci of infected cells.
The granuloma contains mostly blood-derived macrophages, epithelioid cells (differentiated macrophages) and multinucleated giant cells (also known as Langhans giant cells), surrounded by T lymphocytes
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