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Over 2,000 serotypes of Salmonella exist in the environment, and may expose pigs from many different sources. Many of them have no impact on the pig or on pork safety. The risk of pigs getting a certain type of Salmonella may be based on where in the production chain pigs or pork products were contaminated.

Some Salmonella types from pigs and humans

Salmonella Type (Group)	Pig Disease	Human Pathogen	Detected by Mix-ELISA
S. choleraesuis (C1)	Yes	Rare	Yes
S. typhimurium (B)	Yes	Yes	Yes
S. derby (B)	No	Yes	Yes
S. agona (B)	No	Yes	Yes
S. heidelberg (B)	No	Yes	Yes
S. newport (C2)	No	Yes	Yes

Part of the Salmonella bacteria called the LPS will produce a strong blood test response in pigs. This part of the bacteria also allows grouping of bacteria into different “serogroups”. The Mix-ELISA is used to test for antibodies in a group of pigs, indicating they have been infected with Salmonella. It detects antibodies from pigs infected with S. choleraesuis, and nearly all of the Salmonella that are important in food safety.

The Boehringer Ingelheim Vetmedica, Inc. Health Management Center has the Mix-ELISA blood test for use in Salmonella reduction projects. Pigs vaccinated with Enterisol^® SC-54 will NOT test positive as a result of vaccination; the Mix-ELISA is a “differential test” when used with Enterisol^® SC-54. Other Salmonella vaccines may stimulate antibodies, confusing diagnostics and leading to false positive results from serology.

Human Risk

Salmonella choleraesuis is “host adapted”, in that it prefers to infect pigs. Infection of humans may occur, but is very rare. Many other Salmonella can infect pigs and people, most importantly Salmonella typhimurium. Typically, infection produces fever, diarrhea, and other signs of intestinal infection.

If farm staff exhibit these signs, they should consult a physician. Also, proper hygiene on the farm can protect people from Salmonella. It may also prevent humans from exposing pigs. Having a sink and toilet on a farm site was shown to reduce risk of Salmonella infection in pigs.

Application

Enterisol^® Ileitis launches new dose size

Additional sizes of Enterisol^® Ileitis will be available. A two hundred fifty (250) dose bottle of frozen vaccine is now available. This can be matched with the same dose size of Enterisol^® SC-54 for complete enteric health protection within one drinking water vaccination. Research at Boehringer Ingelheim Vetmedica, Inc. has demonstrated challenge efficacy against ileitis when up to three oral vaccines are administered in drinking water at the same time (Enterisol^® Ileitis, Enterisol^® SC-54 and Ingelvac^® ERY-ALC). Convenience and enteric health protection in one simple administration.

To BI

Contact Information

Boehringer Ingelheim Vetmedica, Inc.
2621 North Belt
Highway, St. Joseph,
MO 64506-2002

Phone numbers

Order Entry: 1-800-325-9167
Information: 1-800-821-7467
Fax Line: 1-816-236-2787

www.bi-vetmedica.com

Enterisol and Ingelvac are registered trademarks of Boehringer Ingelheim Vetmedica, GmbH, Ingelheim, Germany.

More information

Nielsen B, et al. Serological surveillance for Salmonella in swine herds. Proceedings of the Symposium on the Diagnosis of Salmonella Infections. AAVLD. 1995

Funk, et al. Risk Factors Associated with Salmonella enterica Prevalence in Three-site Swine Production Systems in North Carolina, U.S.A. Proceedings 4th Salinpork. 2001