By Michael Le Page
Ahn Young-joon/AP/Shutterstock
UNTIL 2020, many experts thought it was impossible to halt the spread of a respiratory virus once it started to spread out of control. During the course of the year, many countries have shown it is possible to contain the coronavirus even without the help of a vaccine but only a few have managed to keep it contained.
By late January, the crowded metropolis of Wuhan in China was reporting thousands of new covid-19 cases every day. It seemed inevitable that the outbreak would spread throughout the country of 1.4 billion people, especially as it was becoming clear …