2.

"Differential Diagnosis. □ Inhalation anthrax. □ Tularemia. □ Viral Pneumonia. 
Influenza,. Hantavirus,. RSV, CMV. □ Other Bacterial Pneumonia. □ Q Fever."

http://www.columbia.edu/cu/biology/courses/g4158/presentations/2003/8-Plague/Plague3.ppt