Chapter 14, Problem 51RE

Interpretation Introduction

Interpretation:

The characteristics of HIV, SARS, and common flu in terms of transmissibility and lethalness are to be compared.

Concept introduction:

Viruses are small infectious pathogens that only replicate within the living cells of the organism. They can infect every life form, animals, plants, and microbes like bacteria, archaea, and others.

When the virus is not inside a living cell or is going to infect a living cell, it exists in the state of independent units.