Which Salmonella serovar is mentioned in relation to rectal stricture in pigs?

Which Salmonella serovar is mentioned in relation to rectal stricture in pigs?

• A. Salmonella typhimurium
• B. Salmonella choleraesuis
• C. Salmonella enteritidis
• D. Salmonella Dublin

Answer: (A)

Salmonella serovars differ in where and how they affect pigs, so knowing which serovar tends to cause specific intestinal changes helps link the organism to particular lesions. In this context, the serovar associated with enteric disease that can lead to chronic inflammation of the rectum—and even scar formation causing a stricture—is Salmonella typhimurium. This serovar is classically linked to enteric involvement in swine, including colitis that can progress to narrowing of the rectum. The other serovars listed have different typical presentations in pigs: choleraesuis more often causes septicemia and systemic illness, Dublin is strongly associated with cattle and can infect pigs but isn’t the classic cause of rectal stricture, and enteritidis is more commonly linked to poultry and human foodborne illness.

Salmonella serovars differ in where and how they affect pigs, so knowing which serovar tends to cause specific intestinal changes helps link the organism to particular lesions. In this context, the serovar associated with enteric disease that can lead to chronic inflammation of the rectum—and even scar formation causing a stricture—is Salmonella typhimurium. This serovar is classically linked to enteric involvement in swine, including colitis that can progress to narrowing of the rectum. The other serovars listed have different typical presentations in pigs: choleraesuis more often causes septicemia and systemic illness, Dublin is strongly associated with cattle and can infect pigs but isn’t the classic cause of rectal stricture, and enteritidis is more commonly linked to poultry and human foodborne illness.