Outbreak of severe acute respiratory syndrome - Worldwide, 2003.

First description of the scope of the outbreak dated March 21, 2003,  preliminary case definition, and interim infection control guidance for the United States. Available from the CDC at this link.

One week later the CDC published "Update: Outbreak of severe acute respiratory syndrome - worldwide," MMWR, 52, 241-248.

Dated March 28, 2003, this detailed meticulous patient contact tracing on the ground and identified "patient zero" while preserving his/her anonymity. Available from the CDC at this link.

(Thanks to Juan Weiss for this entry and its interpretation.)