- Undulant fever - characterized by a flu-like illness and a rising and falling body temperature.
Habitat & Transmission
- Lives in cows.
- Can be found in unpasteurized milk and cheese.
- Can survive and replicate within some immune cells.
- Only rarely can it be transferred from one person to another.
- Infects humans by way of ingested milk products or through the skin of meat workers.
- Uses a toxin to cause a flu-like illness that can progress but usually resolves in a few weeks.
- Can form an abscess.
- Can survive and multiply in macrophages after they are swallowed whole.
- Pasteurizing milk is an effective way to kill Brucella abortus.
- Uncommon in the U.S. thanks to widespread vaccination of cattle.
- Brucella abortus is rarely a dangerous disease.
- Will usually be controlled by the immune system within a few weeks or days.
Photo - Brucella spp. are gram-negative in their staining morphology. CDC/Courtesy of Larry Stauffer, Oregon State Public Health Laboratory. 2002. Used with permission.
Last Updated (Monday, 22 June 2009 18:58)