South Korea has a successful strategy because it learned from the bitter experience of the past, something Western countries didn’t have the benefit of.
South Korea’s CDC has about 100 epidemiology investigators, up from just two during the MERS outbreak.
Tracing potential contacts in South Korea involved reviewing hundreds of hours of surveillance camera footage and going through mobile phone and credit card transactions.
So-called CCTVs are ubiquitous in South Korea as virtually all streets and workplaces have them.
While those are mostly imported cases brought in from the outside, South Korea’s virus squad knows how tenuous its gains are, and the importance of vigilance.