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Immune response of calves to foot-and-mouth disease virus vaccine emulsified with oil adjuvant. Strategies of vaccination. 1995

E J Späth, and E Smitsaart, and A P Casaro, and N Fondevila, and F Fernández, and M R Leunda, and D Compaired, and M Buffarini, and H Pessi
Instituto de Virología, Centro de Investigación en Ciencias Veterinarias, Morón, Provincia de Buenos Aires, Argentina.

Calves born to vaccinated cows under the regular annual vaccination programme were vaccinated at different ages using commercial quadrivalent (01, A79, A87 and C85 FMDV strains) vaccine emulsified in oil adjuvant. The antibody responses of vaccinated calves were evaluated using liquid-phase blocking sandwich ELISA. All calves 20, 30 and 40 days old having high maternal antibody titres responded well to vaccination. Moreover, 25-57% of vaccinated calves showed protective antibody titres both at 90 and 120 days post-vaccination (d.p.v.), whereas none of the non-vaccinated animals achieved these levels. Calves aged 3-4 months with non-protective levels of colostral-derived antibodies responded with high antibody titres to vaccination which persisted for at least 4 months. In both groups of calves a certain degree of suppression of postvaccinal response was observed which was related to colostral antibody titres. Our results suggest that in order to reduce the proportion of calves susceptible to infection it is advisable to immunize calves as young as 20 days old to induce acceptable antibody titres for the following 4 months. In addition, a second vaccination 60 d.p.v. ensures high antibody levels in high disease risk areas.

UI MeSH Term Description Entries
D008297 Male Males
D009821 Oils Unctuous combustible substances that are liquid or easily liquefiable on warming, and are soluble in ether but insoluble in water. Such substances, depending on their origin, are classified as animal, mineral, or vegetable oils. Depending on their behavior on heating, they are volatile or fixed. (Dorland, 28th ed)
D002417 Cattle Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor. Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D003126 Colostrum The thin, yellow, serous fluid secreted by the mammary glands during pregnancy and immediately postpartum before lactation begins. It consists of immunologically active substances, white blood cells, water, protein, fat, and carbohydrates. Colostrums
D004655 Emulsions Colloids formed by the combination of two immiscible liquids such as oil and water. Lipid-in-water emulsions are usually liquid, like milk or lotion. Water-in-lipid emulsions tend to be creams. The formation of emulsions may be aided by amphiphatic molecules that surround one component of the system to form MICELLES. Emulsion
D005260 Female Females
D005537 Aphthovirus A genus of the family PICORNAVIRIDAE infecting mainly cloven-hoofed animals. They cause vesicular lesions and upper respiratory tract infections. FOOT AND MOUTH DISEASE VIRUS is the type species. Equine rhinitis A virus,Equine rhinovirus 1,Aphthoviruses
D006207 Half-Life The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity. Halflife,Half Life,Half-Lifes,Halflifes
D000276 Adjuvants, Immunologic Substances that augment, stimulate, activate, potentiate, or modulate the immune response at either the cellular or humoral level. The classical agents (Freund's adjuvant, BCG, Corynebacterium parvum, et al.) contain bacterial antigens. Some are endogenous (e.g., histamine, interferon, transfer factor, tuftsin, interleukin-1). Their mode of action is either non-specific, resulting in increased immune responsiveness to a wide variety of antigens, or antigen-specific, i.e., affecting a restricted type of immune response to a narrow group of antigens. The therapeutic efficacy of many biological response modifiers is related to their antigen-specific immunoadjuvanticity. Immunoactivators,Immunoadjuvant,Immunoadjuvants,Immunologic Adjuvant,Immunopotentiator,Immunopotentiators,Immunostimulant,Immunostimulants,Adjuvant, Immunologic,Adjuvants, Immunological,Immunologic Adjuvants,Immunological Adjuvant,Adjuvant, Immunological,Immunological Adjuvants
D000367 Age Factors Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time. Age Reporting,Age Factor,Factor, Age,Factors, Age

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