نتایج جستجو برای: killed vaccine
تعداد نتایج: 126440 فیلتر نتایج به سال:
Background and purpose: Toxoplasma gondii (T. gondii) as a causative agent of toxoplasmosis, is an obligate intracellular parasite which is excreted by the cat's feces. Efforts have been made for the development of toxoplasmosis vaccine, but none led to developing a vaccine with protective immune response to the parasite. Adjuvants are essential for vaccine formulation to create strong immune r...
This study evaluated and compared the efficacy of a live (intermediate plus strain) and two killed (produced from intermediate plus and intermediate strains of viruses) infectious bursal disease vaccines in commercial Isa brown cockerel chicks. Two hundred and eighty, one day old chicks were divided into four groups of seventy chicks each. Group 1, 2 and 3 were vaccinated with live vaccine, kil...
Although vaccination against Salmonella has been used more frequently in broiler breeders in recent years, there is limited information in the literature demonstrating the immunological response of combinations of live and killed whole cell vaccines. The present research assesses the immunological response generated by three different vaccination protocols. Treatment vaccines consisted of a liv...
Random-bred mice were immunized with a nonliving antigen prepared from mixed-blood forms of Plasmodium berghei, strain NYU-2, in combination with Corynebacterium parvum and/or living BCG. A high proportion of intravenously immunized mice survived virulent challenge, but subcutaneous vaccination was less effective. Vaccinated mice developed a patent infection after challenge similar to that obse...
Hyaluronidase was first used in human antituberculosis vaccination in 1950 (Salhioli, 1933). From the very first it was possible to see that the addition of hyaluronidase increases remarkably the vaccinating activity of killed tubercle bacilli injected intradermally. Also it was confirmed that their diffusion offered an interesting field of study not only of vaccinating antigens consisting of m...
The New York 1999 strain of West Nile virus (WNV) is nearly 100% fatal in the American crow (Corvus brachyrhynchos). We evaluated four WNV vaccine formulations in American crows, including intramuscular (i.m.) DNA vaccine, i.m. DNA vaccine with adjuvant, orally administered microencapsulated DNA vaccine, and i.m. killed vaccine. Neutralizing antibodies developed in approximately 80% of crows th...
The present study was designed to determine if an oral live Bordetella bronchiseptica vaccine protects dogs from developing signs of respiratory disease after challenge with virulent Bordetella bronchiseptica. The study was also designed to compare the level of protection induced by the oral vaccine with the protection provided by an intranasal live vaccine and an injected killed vaccine. Forty...
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