Diarrhea can be caused by viruses, bacteria, or parasites. Parasites are living beings who live from or in any other living creature. They get the nutrients and other benefits to having a devastating effect on living beings into their host. Some types of worms can live as parasites in our intestines and cause symptoms such as diarrhea.
Virus that usually causes diarrhea include:
- Rotavirus: This is the main cause in the first two years of age. This is the most important cause of severe life-threatening diarrhea in young children.
- Norwalk Virus: This virus causes vomiting and diarrhea in children is greater.
The bacteria that usually causes diarrhea include:
- E. coli: This is an important cause of acute watery diarrhea in adults and children. The bacteria are usually spread through contaminated food and water
- Vibrio cholerae: This bacterium causes cholera. Diarrhea can be severe, causing a lack of fluids or dehydration within a few hours, if the fluid and salts lost are not replaced immediately.
- Campylobacter jejuni: The bacteria are usually the cause of diarrhea in infants. Campylobacter jejuni was also infects animals, mainly chickens and dogs. The bacteria are spread through contact with feces of infected humans or consumption of food, milk, or contaminated water. Approximately 66% of infants infected with Campylobacter jejuni experiencing watery diarrhea while others have dysentery.
- Shigella: This is the most common cause of diarrhea. This bacterium also causes watery diarrhea. Shigella often spread through transmission from person to person
- Salmonella: Most infections caused by salmonella caused by consumption of contaminated animal products. This bacterium usually causes watery diarrhea, but also can cause dysentery.
Other bacteria that can cause diarrhea include Staphylococcus, Bacillus and other cireus.
Parasite that usually causes diarrhea include:
- Cryptosporidium: Parasites usually cause disease in infants and people who bad his body natural defense mechanism. Children who were older and adults normally have asymptomatic infestation. That means, the parasites do not cause any symptoms.
- Entamoeba histolytica: This parasite causes amebiasis, and usually in children and larger adults. This infestation is usually detected by human waste in the laboratory examination. This parasite causes dysentery.
- Giardia lamblia: This parasite causes giardiasis in children.