Level 4 Virus Hunters of the CDC

1999, 397-page trade paperback edition, Barnes & Noble. Updated edition, with new material by author Joseph B. McCormick. The Center for Disease Control classifies the deadliest of viruses as level 4.

The hemorrhagic viral diseases, such as Ebola, are among the most elusive and gruesome diseases known to man. Joseph B. McCormick and Susan Fisher-Hoch, a husband-and-wife team formerly of the Centers for Disease Control in Atlanta, have spent their lives tracking these pathogens, traversing the globe in heroic efforts to confine them and prevent epidemic. In Level 4, McCormick and Fisher-Hoch recount their most gripping and rewarding experiences, and give insight into the stubborn bravery and driving curiosity that compels them to continually put their own lives at risk for the welfare of humanity.