Since the identification of the first cases of the coronavirus in
December 2019, there has been a significant amount of confusion
regarding the origin and spread of the so-called 'coronavirus',
SARS-CoV-2, and the cause of the disease COVID-19. Conflicting messages
from the media and officials across different countries and
organizations, the abundance of disparate sources of information,
unfounded conspiracy theories on the origins of the virus, unproven
therapies, and inconsistent public health measures, have all served to
increase anxiety in the population. Where did the virus come from? How
is it transmitted? How does it cause disease? Is it like flu? What is a
pandemic? In this concise and accessible introduction, a leading expert
provides answers to these commonly asked questions. This revised and
updated edition now also covers how the virus mutates, how important
these mutations are, how vaccines work, and what we can expect in the
near and long-term future.