Negative pressure room
Nearly 20,000 people are being tested every day for coronavirus in South Korea, more people per capita than anywhere else in the world.
Rachel's sample is quickly shipped off to a nearby laboratory where staff are working 24 hours a day to process the results.
The preventative measures being taken in South Korea have so far involved no lockdowns, no roadblocks and no restriction on movement.
Trace, test and treat is the mantra. So far this country of over 50 million people have been doing their bit to help. Schools remain closed, offices are encouraging people to work from home, large gatherings have stopped.
However, slowly, day by day, more people are creeping back onto the streets of the capital city, Seoul. Restaurants, buses and subways are beginning to get busy again.
Dealing with the threat of coronavirus is the new normal. Most people wear masks (if they can get hold of one). There are thermal imaging cameras in the entrances to major buildings.
Bottles of hand sanitisers have been placed in lifts. There are even people dressed in costumes at subway entrances reminding you to wash your hands.