background: comparison between infectious bursal disease vaccines. objectives: comparison between foreign and iranian intermediate uncloned gumboro vaccines on feed conversion ratio. methods: three hundred and thirty day-old chicks were purchased and for determination of vaccination time by deventer formula, thirty chicks were randomly bled and the remaining chicks divided into 3 equal groups, ...

various commercial vaccines for immunization of broiler chickens against infectious bursal disease (ibd) are available, so it would be appropriate to compare the pathogenicity and immune response of chickens to these vaccines. in this study the pathogenicity and serologic response of four ibd vaccines, cloned d78®, bursine-2®, bursimune® and cevac gambo-l®, were evaluated in specific pathogen f...

the effeminacy of three rubella vaccines, hpv/77 ide-5, cendehill-51 and wistar ra/27/3 in conferring immunity against untenanted rubella virus was compared. vaccination resulted in 90-100 percent protection against clinical rubella. intranasal challenge with the untenanted strain of rubella virus resulted in serologic evidence of in apparent reinfection in three of the ten cendehill-51 vaccine...

Leishmaniasis is one of the major health problems and categorized as a class I disease (emerging and uncontrolled) by World Health Organization (WHO), causing highly significant morbidity and mortality. Indeed, more than 350 million individuals are at risk of Leishmania infection, and about 1.6 million new cases occur causing more than 50 thousands death annually. Because of the severe...

Objective(s): The results of studies on vaccine development for foot-and-mouth disease (FMD) virus show that the use of inactivated vaccines for FMD virus is not completely effective. Novel vaccinations based on immuno-dominant epitopes have been shown to induce immune responses. Furthermore, for safety of immunization, access to efficient adjuvants against FMD virus seems to be critical.Materi...

OBJECTIVES To summarise the current status of genital herpes simplex virus (HSV) vaccine development and provide a discussion of the potential benefits and limitations of genital herpes vaccines. METHODS Literature review. RESULTS Genital herpes simplex virus infection has a complex pathogenesis that has contributed to it becoming a serious worldwide problem. In an attempt to control the pr...