Entamoeba coli
- Hosts
- Transmission/Exposure Routes
- Incubation Times
- Case Fatality Ratios
- Burden of Disease
- Microbiology
- Environmental Survival
- Recommended Dose Response Model
Human
Fecal-oral, indirectly through contact with dirty hands or objects
2 days to 4 months [1]
Case fatality rates associated with amebic colitis range from 1.9%-9.1%. Amebic colitis evolves to fulminant necrotizing colitis or rupture in approximately 0.5% of cases; in such cases, the mortality rate jumps to greater than 40%. [2]
The mortality rate due to amebic liver abscess has fallen to 1-3% in the last century following the introduction of effective medical treatment. Nevertheless, amebic liver abscess is complicated by sudden intraperitoneal rupture in 2-7% of patients, leading to a higher mortality rate[3]
Asymptomatic intestinal amebiasis occurs in 90% of infected individuals. However, only 4%-10% of individuals with asymptomatic amebiasis who were monitored for one year eventually developed colitis or extraintestinal disease [4]
The overall prevalence of amebiasis is approximately 4% in the United States[1]
Entamoeba species infect approximately 10% of the world's population[1]
Duration of Infectiousness and disease
Symptomology
Latency
Asymptomatic Rates
Excretion Rates (see Exposure)
Immunity
A non-pathogenic species of Entamoeba that frequently exists as a commensal parasite in the human gastrointestinal tract
Survive weeks to months in the external environment
References
http://www.cdc.gov/parasites/nonpathprotozoa/biology.html
http://en.wikipedia.org/wiki/Entamoeba_coli
http://www.cdc.gov/parasites/nonpathprotozoa/
Medscape Pediatric Amebiasis
- ↑ 1.0 1.1 1.2 <Medscape
- ↑ Aristizábal H, Acevedo J, Botero M. Fulminant amebic colitis. World J Surg. Mar-Apr 1991;15(2):216-21 Full Text
- ↑ Stanley SL Jr. Amoebiasis. Lancet. Mar 22 2003;361(9362):1025-34
- ↑ Fotedar R, Stark D, Beebe N, et al. Laboratory diagnostic techniques for Entamoeba species. Clin Microbiol Rev. Jul 2007;20(3):511-32 Full Text
