What are the characteristics of Cryptosporidium parvum?

CHARACTERISTICS: Cryptosporidium parvum is an intracellular protozoan parasite of the family Cryptosporidiidae and phylum Apicomplexa 1 3. It has a complex lifecycle with sexual and asexual cycles taking place in a single host 4. Oocysts are thick-walled and are the extracellular and environmental stage 1 3.

What is Cryptosporidium parvum Giardia lamblia?

Cryptosporidium parvum (C. parvum) and Giardia lamblia (G. lamblia) are protozoan parasites that can cause gastrointestinal illness in humans [1].

What is the morphology of Cryptosporidium parvum?

Cryptosporidium spp. oocysts are rounded and measure 4.2 to 5.4 ┬Ám in diameter. Sporozoites are sometimes visible inside the oocysts, indicating that sporulation has occurred. Figure A: Cryptosporidium parvum oocysts stained with the fluorescent stain auramine-rhodamine.

What is the pathogenesis of Cryptosporidium parvum?

Cryptosporidium parvum can be regarded as a minimally invasive mucosal pathogen, since it invades surface epithelial cells that line the intestinal tract but does not invade deeper layers of the intestinal mucosa. Nonetheless, infection can be associated with diarrhea and marked mucosal inflammation.

What is Cryptosporidium parvum classified as?

Cryptosporidium parvum is one of several species that cause cryptosporidiosis, a parasitic disease of the mammalian intestinal tract….

Cryptosporidium parvum
Phylum: Apicomplexa
Class: Conoidasida
Subclass: Coccidia
Order: Eucoccidiorida

Where is Cryptosporidium parvum?

Cryptosporidium parvum is water-borne opportunistic infection that affects patients with HIV/AIDS but has also been seen as outbreaks among children in day care centers. The disease primarily affects the small bowel leading to cholera-like watery diarrhea.

What is the difference between Cryptosporidium and Giardia?

The disease caused by Cryptosporidium parvum is called cryptosporidiosis, while the disease caused by Giardia lamblia is called giardiasis. Symptoms can range from mild to severe diarrhea accompanied by headaches, fever, cramping, loss of appetite, weight loss and nausea.

What is the public health importance of Cryptosporidium and Cyclospora?

Cryptosporidium spp., Enterocytozoon spp., Giardia spp. and Cyclospora spp. are important intestinal protozoan parasites causing diarrhea in humans, livestocks and wildlife and have a significant impact on public health.

How is Cryptosporidium parvum transmitted?

Crypto may be found in soil, food, water, or surfaces that have been contaminated with the feces of infected humans or animals. Common ways Cryptosporidium is transmitted include: Swallowing contaminated water while swimming or drinking. Having contact with animals, especially calves and goats, and their environment.

What is the life cycle of Cryptosporidium parvum?

Life Cycle Sporulated oocysts, containing 4 sporozoites, are excreted by the infected host through feces and possibly other routes such as respiratory secretions (1). Transmission of Cryptosporidium parvum and C. hominis occurs mainly through contact with contaminated water (e.g., drinking or recreational water).

What does Cryptosporidium parvum infect?

Cryptosporidium parvum is a coccidian parasite that affects the intestinal and respiratory epithelium of vertebrates. It is capable of causing disease both in immunocompetent and immunocompromised hosts.

Where is Cryptosporidium parvum found?

Cryptosporidium parvum is found worldwide, including the United States. It typically infects the small intestine of humans and animals. Any dog, cat, farm animal or wild animal, including birds, fish, and reptiles, can become infected, though calves are the most likely animal to be infected.