HOW OFFICES CAN BE AN INFECTION RISK

The cluster of work desks above and below depict the two sides of a call centre in South Korea. The floor, with 216 workers in all, is separated by a segment that has washrooms and elevators

In all, 94 workers from this floor tested positive for Covid-19, with most of them being on the same side of the floor (above)

The other side of the floor (below) had only a handful of cases

This suggests the disease is extremely contagious in crowded offices, researchers wrote in the Emerging Infectious Diseases journal.