Enrique Ruiz Escudero said authorities are investigating possible links between a recent Gay Pride event in the Canary Islands, which drew some 80,000 people, and cases at a Madrid sauna. Madrid's senior health official said on Monday that the Spanish capital has recorded 30 confirmed cases so far. Jon LaPook it's unusual that we are seeing cases happening in several countries at the same time: 'We've never seen that.' She told CBS News chief medical correspondent Dr. Anne Rimoin, professor of epidemiology at the UCLA Fielding School of Public Health. 'It's important to know that this virus really does require close personal contact,' said Dr. The virus is spread through body fluids, skin and respiratory droplets.