Table: Diarrheal Diseases in Pigs by Age Group

Diarrheal Diseases in Pigs by Age Group

Organism/Disease	Age Group
	Nursing (0–3 weeks)	Weaning (3–9 weeks)	Growing-finishing or breeding (≥10 weeks)
Bacterial
Clostridioides difficile enteritis Clostridioides difficile Enteritis in Pigs Clostridioides difficile is an important emerging pathogen that causes diarrhea primarily in neonatal swine. The agent was first recognized as a cause of antimicrobial-associated diarrhea... read more	Very common	Uncommon	Rare/Does not occur
Clostridium perfringens type A enteritis Clostridium perfringens Type A Enteritis in Pigs Disease associated with type A strains of Clostridium perfringens is a milder condition than disease associated with C perfringens type C. Diagnosis is challenging, because C... read more	Common	Rare/Does not occur	Rare/Does not occur
Clostridium perfringens type C enteritis Clostridium perfringens Type C Enteritis in Pigs Infection of the small intestine by type C strains of Clostridium perfringens causes a highly fatal, necrohemorrhagic enteritis. It most commonly affects piglets 1–5 days old; however... read more	Common	Rare/Does not occur	Rare/Does not occur
Enteric colibacillosis Enteric Colibacillosis in Pigs Enteric colibacillosis is a common disease of nursing and weanling pigs caused by colonization of the small intestine by enterotoxigenic strains of Escherichia coli (ETEC). Colonization... read more	Very common	Very common	Rare/Does not occur
Intestinal salmonellosis Intestinal Salmonellosis in Pigs Enteropathogenic salmonellae cause inflammation and necrosis of the small and large intestines, resulting in diarrhea. Infection with certain serotypes may be accompanied by generalized sepsis... read more	Uncommon	Very common	Very common
Intestinal spirochetosis Intestinal Spirochetosis in Pigs Intestinal spirochetosis is a disease limited to the large intestine that commonly manifests as a mucoid diarrhea in grower-finisher pigs. Disease is considerably less severe than what is observed... read more	Rare/Does not occur	Very common	Common
Porcine proliferative enteropathy Porcine Proliferative Enteropathy Porcine proliferative enteropathy is a common diarrheal disease of growing-finishing pigs and young breeding pigs, characterized by hyperplasia and inflammation of the jejunum, ileum, cecum... read more	Rare/Does not occur	Common	Very common
Swine dysentery Swine Dysentery Swine dysentery is a mucohemorrhagic diarrheal disease of pigs that is limited to the large intestine. Swine dysentery is most often observed in growing-finishing pigs and is associated with... read more	Rare/Does not Occur	Common	Very common
Parasitic
Cryptosporidium sp Parasitism (Gastrointestinal) in Pigs	Uncommon	Uncommon	Rare/Does not Occur
Cystoisospora suis Parasitism (Gastrointestinal) in Pigs	Very common	Uncommon	Rare/Does not Occur
Strongyloides ransomi Parasitism (Gastrointestinal) in Pigs	Uncommon	Uncommon	Uncommon
Trichuris suis Parasitism (Gastrointestinal) in Pigs	Rare/Does not occur	Rare/Does not occur	Common+
Viral
Porcine circovirus diarrhea Porcine Circovirus Diseases	Uncommon	Common	Common
Porcine coronaviral enteritis Porcine Coronaviral Enteritis Coronaviral enteritis affects pigs of all ages and typically manifests as an acute watery diarrhea. Multiple coronaviruses cause enteric disease in pigs, and clinical differentiation is difficult... read more	Very common	Very common	Common
Porcine delta coronavirus	Very common	Common	Common
Rotaviral enteritis Rotaviral Enteritis in Pigs Rotaviral enteritis is a common disease of the small intestine of pigs. Pigs of all ages are susceptible to infection; however, diarrheal disease usually occurs in nursing piglets and weaned... read more	Very common	Very common	Rare/uncommon
Transmissible gastroenteritis Porcine Coronaviral Enteritis Coronaviral enteritis affects pigs of all ages and typically manifests as an acute watery diarrhea. Multiple coronaviruses cause enteric disease in pigs, and clinical differentiation is difficult... read more	Very common	Very common	Common

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Diarrheal Diseases in Pigs by Age Group