By Ju-min Park and Jack Kim SEOUL (Reuters) – The MERS outbreak that has spread through health facilities in South Korea may have peaked, although two hospitals that treated people with the deadly respiratory disease have been sealed off, officials said. Middle East Respiratory Syndrome has infected 126 people in South Korea and killed 13 since it was first diagnosed just over three weeks ago in a businessman who had returned from a trip to the Middle East. The Health Ministry announced two more deaths in elderly patients who had been suffering respiratory ailments before they tested positive for the virus.