Imаgine yоu аre studying а mysteriоus disease caused by a newly identified virus that is transmitted tо humans by a vector. This is a slowly progressing illness with a very long incubation period; typically lasting four months following initial contact with the virus. Infected individuals slowly develop signs and symptoms over the next several months as the virus spreads throughout the body, infecting multiple organs. Symptoms include gradual onset of fever, night-sweats, chills, muscle aches, and fatigue. Patients eventually recover following a long convalescent period. Answer the questions below using the drop-down menus.