Detection of Intestinal Parasites
Intestinal Parasites

March 2009
So before we delve into laboratory diagnostics, let’s start with a brief overview of Intestinal Parasites.
They are found throughout the world and are very common in many settings. They are less common in countries with adequate water treatment and sanitation facilities such as the United States and Canada.
However, they are still responsible for a significant number of cases in North America.
In fact, Based on data from the U.S. Centers for Disease Control, there as many as 2 million infections with Giardia intestinalis and 300,000 infections with Cryptosporidium species annually in the United States.
Pinworm infections are also very common in some U.S. populations, such as children and their immediate contacts. However, detection of this parasite is not usually made through fecal examination and, therefore, we won’t be discussing this further today.
Intestinal Parasites |
Jump to section:
- Introduction
- Intestinal Parasites
- Detection of Intestinal Parasites
- Direct Smear of Fresh Feces
- Direct Smear of Fresh Feces
- Motile Trophozoite of Pentatrichomonas hominis
- Motile Larva of Strongyloides stercoralis
- Feces Concentration
- Concentrated Feces with Saline
- Concentrated Feces Wet Preparation
- Concentrated Fecal Smear Stained with a Modified Trichrome Stain
- Giardia intestinalis
- Additional Tests on Fecal Samples
- Which One to Order?
- Parasitic Investiagation of Stool Specimens Algorithm
- Giardia intestinalis
- Life Cycle of Giardia
- Concentrated Feces Wet Preparation
- Giardia intestinalis - Cyst
- Giardia intestinalis - Trophozoite
- Clinical Presentation
- Epidemiology
- US Risk Factors for Giardiasis
- G intestinalis is Easily Transmitted Because
- Diagnosis of Giardiasis
- Algorithm Close-up
- Giardia Antigen Test, Feces
- Sandwich Assay
- ELISA Microtiter Plate
- Treatment
- Cryptosporidium spp
- Cryptosporidium Life Cycle
- Cryptosporidium - Cyst on Wet Prep
- Cryptosporidium - Cysts with Acid Fast Stain
- Clinical Presentation
- Epidemiology
- Examples of Outbreaks
- Examples of Outbreaks
- Cryptosporidium is Easily Acquired Because
- Diagnosis
- Algorithm Close-up
- Cryptosporidium Antigen Test, Feces
- Treatment
- Less Common Fecal Parasites
- Algorithm Close-up
- References
- Questions?