Morning Briefing

As London prepares for more than five million visitors to attend Olympic events in the city this summer, IRIN examines how "mass gatherings -- from religious pilgrimages like the annual Haj to Saudi Arabia and India's huge Kumbh Mela, to major sporting events like the Olympic Games and the Football World Cup -- present important health challenges to organizers and participants alike." The news service writes that "a new public health specialty is developing around these major international events, allowing organizers to share their expertise, and exploit new technologies to manage risk and track disease outbreaks in real time."