The worst Ebola outbreak in history is moving into Africa's cities, confusion and terror spread in its wake

The dreaded Ebola virus came to the children's hospital in the form of a 4-year-old boy. His diagnosis became clear three days after he was admitted. The Ola During hospital - the nation's only pediatric center - was forced to close its steel gates. Fear swelled. The boy died. The 30 doctors and nurses who had contact with him were placed in quarantine, forced to nervously wait out the 21 days it can take for the virus to emerge. And remaining staff so far have refused to return to work. They, along with millions of others, are facing the worst Ebola outbreak in history. Already, the hardest-hit West African nations of Guinea, Liberia and Sierra Leone have reported more than 3,000 cases, including the infections of 240 health-care workers.