A Liberian man who was quarantined in Lagos , Nigeria , dies of pneumonia . Lagos has more than one million residents . What is Ebola , and why does it kill ? The current outbreak of the virus is the deadliest ever , Nigerian officials say . The outbreak has been reported in Guinea , Sierra Leone and Liberia .
A Liberian man who was quarantined in Lagos , Nigeria , dies of pneumonia . Lagos has more than one million residents . The current outbreak of the virus is the deadliest ever , Nigerian officials say . The outbreak has been reported in Guinea , Sierra Leone and Liberia .