摘要:
DNA vaccine against a pathogen affecting farm animals, in particular bovines or porcines, comprising a plasmid containing a nucleotide sequence encoding an immunogen of a pathogen of the animal species considered, under conditions allowing the in vivo expression of this sequence, and a cationic lipid containing a quaternary ammonium salt, of formula in which R1 is a saturated or unsaturated linear aliphatic radical having 12 to 18 carbon atoms, R2 is another aliphatic radical containing 2 or 3 carbon atoms, and X a hydroxyl or amine group, this lipid being preferably DMRIE.
摘要:
A live rotavirus vaccine against bovine and human rotaviruses comprising a strain of live bovine rotavirus which does not hemagglutinate primate red blood cells, gives at least about 20 fold higher titers when neutralized with antiserum therefor as compared to heterologous bovine or primate rotaviruses, and has a migration pattern of its RNA genome segments when determined by PAGE substantially as shown by lane WC3 in FIG. 1, the strain of bovine rotavirus having been serially passaged in primate kidney tissue culture a sufficient number of times that when administered to humans the vaccine is immunogenic without causing disease.
摘要:
Described are thymidine kinase negative temperature resistant mutants of bovine herpesvirus effective in inducing resistance to infectious bovine rhinotracheitis, methods for their production, methods for maintaining them in viable form, and methods for administering them to animals in immunologically effective doses to induce resistance to infectious bovine rhinotracheitis.
摘要:
The present invention relates to compositions, uses thereof, and methods of vaccinating cattle, particularly cows and heifers, against Leptospira borgpetersenii serovar hardjo (type hardjo-bovis) by using Leptospira interrogans serovar hardjo (type hardjoprajitno).
摘要:
A new and improved formulation and method for making same, for a broad spectrum antimicrobial treatment for bacterial and viral infections in cattle, horses, pigs, sheep and other domestic and non-domestic animals. More particularly, the present invention relates to a treatment which enables rapid relief of symptoms in an affected animal with a mortality of less than 1 percent by providing trace organic minerals in microgram quantities which act as nutrients for the animal. The treatment provides further nutritional requirements in the form of vitamin A, folic acid and vitamin D3 supplements, cobalt amino acid chelates and dried kelp, a source of minerals, amino acids, simple and complex carbohydrates, iodine and fiber. In addition, a bacterial innoculum consisting of Acidophilus species is introduced which would inhibit growth of pathogenic or opportunistic species of bacteria by competition for nutrients as well as providing for required vitamins as a by-product of metabolism.
摘要:
Bovine herpesvirus type 1 (infectious bovine rhinotracheitis virus) mutants which fail to produce any functional thymidine kinase as a result of a deletion in the thymidine kinase gene. The deletion in the thymidine kinase gene attenuates the viruses so that they can be used as an active agent in a modified live-virus vaccine against infectious bovine rhinotracheitis. This invention also relates to methods for the production and use of the same.
摘要:
A vaccine for infectious bovine rhinotracheitis (IBR) is prepared by non-ionic detergent extraction of IBR virus infected cells. The extracted viral envelope protein can be prepared in injectable dose form by combination with an oil-type adjuvant. The vaccine produces a high level of antibody response, and is capable of eliminating virus shed for animals infected after immunization.
摘要:
Pathogenic infectious bovine rhinotracheitis (IBR) virus may be modified by serial passages in non-bovine tissue cultures until it becomes non-pathogenic when applied to the intranasal passages of bovines. Such application will result in the induction of high levels of interferon in nasal secretions as well as the production of local antibodies and a long lasting immunity against IBR infection by virtue of the induction of specific circulating antibodies. The invention includes the method of modifying the IBR virus, a method of preparing a vaccine therefrom and a method of immunizing bovines and promoting production of high levels of interferon in nasal secretions.
摘要:
A vaccine is prepared by passaging a coronavirus-like agent in tissue culture or by inactivating the viral agent. The vaccine is useful for immunizing bovine animals against calf diarrhea.
摘要:
Genetically stable non-pathogenic strains of infectious bovine rhinotracheitis virus are obtained by combination of (a) induction and isolation of temperature-sensitive mutant strains and (b) serial passages (of the obtained temperature-sensitive strains) in heterologous cell cultures. The obtained virus strains are useful for vaccine production.