Wealthy countries like the United States and some in Europe continue to struggle to control the spread of the disease. Vietnam is much more limited in resources. So, why has it been able to deal effectively with the health crisis? Public health experts say Vietnam has been successful partly because it reacted fast. Early in the coronavirus spread, Vietnam restricted travel into the country and put tens of thousands of people into quarantine. Also, experts note, the country expanded testing and tracked people who might have been in contact with anyone reported infected. Matthew Moore is a Hanoi-based official from the U.S. Centers for Disease Control and Prevention (CDC). He said, “The steps are easy to describe but difficult to implement, yet they’ve been very successful at implementing them over and over again.”