Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Shigella human challenge models
| Species | Serotype | Strain(s) | Typical dose range evaluated (CFU) | No. of challenges administered |
|---|---|---|---|---|
| Shigella flexneri | 2a | 2457T | 102 to 104 | 456 |
| FW I to FW V | 108 to 1010 | |||
| Shigella sonnei | NAa | 53G | 5 × 102 | 178 |
| Shigella dysenteriae | 1 | A-1, M-131 | 102 to 104 | 44 |
NA, not applicable, since S. sonnei has a single serotype.
