The World Health Organization has released the following update on the outbreak of SARS. Read the following WHO Update and the information presented from the Armed Forces Institute of Pathology and prepare a characterization of the disease based on the characteristics of infectious diseases and viruses presented.

Identify the characteristics of SARS which account for its spread and the severity.

Briefly justify your reasons for selecting the characteristics of SARS as described above.

State your opinion as to which characteristic is the most significant factor that causes people to worry and cancel their travel plans.