What are the stages of the parasite giardia?
Giardia has one of the simplest life cycles of all human parasites. The life cycle is composed of 2 stages: (1) the trophozoite (see the first image below), which exists freely in the human small intestine; and (2) the cyst, which is passed into the environment. No intermediate hosts are required.
What is the common name for Giardia lamblia?
Giardia duodenalis, also known as Giardia intestinalis and Giardia lamblia, is a flagellated parasitic microorganism, that colonizes and reproduces in the small intestine, causing a diarrheal condition known as giardiasis.
What is incubation period for Giardia?
Acute giardiasis develops after an incubation period of 1 to 14 days (average of 7 days) and usually lasts 1 to 3 weeks. Symptoms include diarrhea, abdominal pain, bloating, nausea, and vomiting. In chronic giardiasis the symptoms are recurrent and malabsorption and debilitation may occur.
How does Giardia lamblia reproduce?
Giardia reproduce by binary fission and must be attached to a surface for this to occur. Giardia’s main food source, glucose, is obtained by a process of diffusion or by pinocytosis. Like amoebae, they are aerotolerant anaerobes and require a reducing environment. Food reserves are stored in the form of glycogen.
What kind of disease does Giardia lamblia cause?
Giardia lamblia is the protozoan organism that causes the disease Giardiasis, a diarrheal disorder directly affecting the small intestine. Image courtesy CDC/Dr. Visvesvara. A photomicrograph of a positive indirect immunofluorescence test checking for the presence of Giardia lamblia, 1978.
What kind of test is used to test for Giardia?
Photomicrograph of a Giardia lamblia cyst seen using a Trichrome stain. Giardia lamblia is the protozoan organism that causes the disease Giardiasis,… Photomicrograph of a positive indirect immunofluorescence test checking for the presence of Giardia lamblia, 1978.
What kind of organism is Giardia intestinalis?
Giardia Lamblia Trophozoite, Colorized Sem. Giardia Lamblia Also Named Giardia Intestinalis Is A Flagellate Protozoa, Strict Anaerobe, Parasite Of… Mucosal surface of the small intestine of a gerbil infested with Giardia, 1988. Image courtesy Centers for Disease Control / Dr Stan Erlandsen.