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Clostridial Vaccines for Animals


Henry R. Stämpfli

, DVM, DrMedVet, DACVIM, University of Guelph;

Olimpo J. Oliver-Espinosa

, DVM, MSc, DVSc, National University of Colombia

Last full review/revision Jul 2021 | Content last modified Jul 2021

Vaccination is frequently practiced for protection of animals against clostridial diseases. A wide variety of vaccines is available, singly or in combinations that consist of bacterins, toxoids, or mixtures of bacterins and toxoids. Single vaccination with most clostridial vaccines does not provide adequate levels of protection and must be followed by a booster dose within 3–6 weeks. Vaccination of young animals does not yield adequate protective immunity until they are at least 1–2 months old. Therefore, most vaccination strategies target the pregnant dam so that maximal immunity is transferred to the neonate via colostrum. Most commercial vaccines are inactivated and usually contain 2-, 4-, 7-, or 8-way combinations of clostridial organisms/toxoids. These should be optimally timed for provision of maximal protection at the most likely age of susceptibility.

Tetanus toxoid is commonly administered as a single vaccine in horses but is often administered in combination in sheep, goats, and cattle. In sheep and goats, a common combination is tetanus toxoid plus Clostridium perfringens types C and D. In cattle, a combination frequently administered in feedlots is a 4-way vaccine that consists of killed cultures of C chauvoei, C septicum, C novyi, and C sordellii to protect against blackleg and malignant edema. A more complex clostridial vaccine that contains C perfringens types C and D in addition to the components of the 4-way vaccine may be administered to protect cattle against enterotoxemias as well. The addition of C haemolyticum extends the protection to include bacillary hemoglobinuria. The clostridial vaccines often cause tissue reactions and swelling and should therefore be administered to cattle in the neck and by the subcutaneous rather than the intramuscular route.

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Anthrax is a zoonotic disease affecting a broad range of species. Naturally occurring infections can cause illnesses that range from an acute, highly fatal form to a less acute and less serious clinical illness that can also be fatal. Which of the following species is most likely to develop acute fatal disease with anthrax infection?
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