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Two firefighters, one of whom was struck by falling masonry, were given medical treatment.

“If we don’t know who you are after a month, that’s when it becomes decreasingly likely that we’re going to figure it out,” said Dr. Brad Spellberg, the hospital’s chief medical officer.

Verrelli has studied the spread of black widow spiders, an increasing medical health concern in cities along the West Coast.

The BBC was invited to see a mass casualty simulation, a training exercise for medical staff to prepare them for a major incident.

At least eight others were killed as the plane struck the hostel of a medical college when it came down on a densely populated residential area near the airport.