26.02.20. South Korea has seen by far the highest numbers of coronavirus cases outside of China—within a week confirmed cases jumped from a few dozen to more than 900. The country had seemed well prepared and so the skyrocketing numbers have many asking how this happened – and whether a similar sudden outbreak could happen elsewhere. In South Korea, more than half of the Covid-19 cases have been linked to a religious sect and its critics say the group’s secretive nature helped the virus go undetected. Authorities have identified the fringe Christian group Shincheonji Church as being at the heart of this outbreak.