Rotavirus is the most common cause of infectious diarrhea worldwide, particularly in young children.

Clostridium difficile is a bacterial cause of gastroenteritis, often associated with antibiotic use.

Shigella is primarily transmitted through the fecal-oral route, often due to poor sanitation and hygiene practices.

Entamoeba histolytica is a protozoan cause of gastroenteritis, commonly known as amoebiasis.

Salmonella primarily resides in animals, particularly poultry and cattle, and can be transmitted to humans through contaminated food products.

Norovirus is a common viral cause of gastroenteritis, often associated with outbreaks in healthcare facilities and cruise ships.

Giardia lamblia is primarily transmitted through waterborne transmission, often due to contaminated drinking water or recreational water sources.

Staphylococcus aureus is a common cause of food poisoning, often associated with improperly handled or stored food.

Cryptosporidium parvum is primarily transmitted through waterborne transmission, often due to contaminated drinking water or recreational water sources.

Escherichia coli, particularly certain strains like enterotoxigenic E. coli (ETEC), is a common cause of traveler's diarrhea.

Vibrio cholerae is primarily transmitted through waterborne transmission, often due to contaminated drinking water or recreational water sources.

Hepatitis A virus is a common cause of food poisoning, often associated with contaminated food or water.

Yersinia enterocolitica is primarily transmitted through foodborne transmission, often associated with contaminated meat or dairy products.

Entamoeba histolytica can cause food poisoning, particularly when contaminated food or water is consumed.

Campylobacter jejuni is primarily transmitted through foodborne transmission, often associated with contaminated poultry or unpasteurized milk.