Key points
- National Shigella surveillance data are collected through passive surveillance of laboratory-confirmed human Shigella infections.
- Clinical diagnostic laboratories submit Shigella isolates to state and territorial public health laboratories, where they are confirmed, speciated, and subtyped.
- Unusual or untypable isolates are forwarded to CDC; results are then reported back to public health laboratories.

Surveillance overview
State and territorial public health laboratories report Shigella infections electronically to CDC through a variety of mechanisms. Data are collected into the Laboratory-Based Enteric Disease Surveillance (LEDS) system. The annual summaries of these data are the national source of species and subtype information for Shigella.
Annual Summaries
Annual summaries for 2007–2016 are archived on CDC Stacks.
Be sure to look for corresponding
- tables for the 2007–2009 Shigella annual reports, and
- appendices for the 2010–2012 Shigella annual reports.
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