Unit 23 Reading Activity Plus Questions

Read the following text and then complete the activities that follow.
US

Viruses, Epidemics, and Pandemics

Viruses are strange microscopic organisms that behave unlike most other organisms we know. First, they are much smaller than even bacteria and they are not self-sufficient. Viruses need another living thing, called a host, in order to live and multiply. A virus manipulates its host’s cells into creating more viruses. Thus they are thought to be mostly parasitic in nature.

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Quiz: Reading Questions

1. It only takes a miniscule amount of a mutated new strain to severely impact any host:
2. All microscopic organisms multiply:
3. The WHO is the leading organization to officially declare a pandemic, depending on its global progression (like on March 11, 2020, the SARS-CoV-2):
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