Rib fractures in adult horses as a cause of poor performance; diagnosis, treatment and outcome in 73 horses.

Background: Rib fractures in adult horses are poorly documented.

Objectives: To describe the presenting signs, diagnosis, treatment and outcome of horses diagnosed with rib fracture.

Study Design: Retrospective case series.

Mineralization of the Equine Palmar/Plantar Annular Ligament Treated by Surgical Resection.

Objective: To document the clinical presentation, diagnosis, and surgical treatment of mineralization of the equine palmar/plantar annular ligament (PAL).

Study Design: Retrospective study.

Animals: Ponies (n=7).

Multistate outbreak of Listeriosis linked to turkey deli meat and subsequent changes in US regulatory policy.

Background: Listeriosis, a life-threatening foodborne illness caused by Listeria monocytogenes, affects approximately 2500 Americans annually. Between July and October 2002, an uncommon strain of L. monocytogenes caused an outbreak of listeriosis in 9 states.

Molecular surveillance of shiga toxigenic Escherichia coli O157 by PulseNet USA.

PulseNet USA is the national molecular subtyping network system for foodborne disease surveillance. Sixty-four public health and food regulatory laboratories participate in PulseNet USA and routinely perform pulsed-field gel electrophoresis of Shiga toxigenic Escherichia coli isolated from humans, food, water, and the environment on a real-time basis. Clusters of infection are detected in three ways within this system: through rapidly alerting the participants in the electronic communication forum, the PulseNet Web conference; through cluster analysis by the database administrators at the coordinating center at the Centers for Disease Control and Prevention of the patterns uploaded to the central server by the participants; and by matching profiles of strains from nonhuman sources with recent human uploads to the national server.