Introduction
Urban hospitals in developed countries face migrants from areas highly endemic for TB. In 2011-12, it is estimated that 70,000 East African migrants settled in Tel Aviv, Israel. This was followed by a dramatic increase in the incidence of newly diagnosed TB cases in our institution (from 8 to 23 cases/105 hospital days) resulting in several large scale nosocomial exposures to TB from allegedly asymptomatic patients with active TB. We intervened to protect hospitalized patients and staff from accidental exposures to TB.