OBJECTIVE To evaluate the immunogenicity and safety of a novel hepatitis B vaccine, after increasing antigen concentration to 25 mug, in comparison to the reference vaccine. METHODS Single-blinded randomized trial comparing VrHB-IB (Instituto Butantan) and the reference vaccine (Engerix B(R), Glaxo Smith Kline). Volunteers aged 31 to 40 years were randomized to either experimental (n=216) or ...

The development of an HIV vaccine poses an unprecedented challenge to the scientific community. The inexorable spread of HIV worldwide and the devastating clinical consequences of AIDS can only be contained by an effective vaccine. Yet, almost two decades after the first demonstration of HIV and its etiologic role in AIDS, this vaccine still is a goal, not a reality. In this Perspective, I cons...

The effectiveness of interleukin 10 (IL-10) in the treatment of autoimmune-mediated central nervous system inflammation is controversial. Studies of the model system, experimental autoimmune encephalomyelitis (EAE), using various routes, regimens, and delivery methods of IL-10 suggest that these variables may affect its immunoregulatory function. To study the influence of these factors on IL-10...

This report describes the preparation of a safe and immunogenic single vaccine against capripox disease in sheep and goats using two different types of cells (primary lamb kidney and vero, a bovine turbinate cell line). This used the 0240 pox strain isolated from sheep during an outbreak. The prepared vaccine was administered subcutaneously and induced complete protection against an experimenta...

Vaxign is the first web-based vaccine design system that predicts vaccine targets based on genome sequences using the strategy of reverse vaccinology. Predicted features in the Vaxign pipeline include protein subcellular location, transmembrane helices, adhesin probability, conservation to human and/or mouse proteins, sequence exclusion from genome(s) of nonpathogenic strain(s), and epitope bin...

conclusions in this experimental study, for the first time in iran the expression and purification of this recombinant protein was done successfully. this recombinant protein could be used as a vaccine candidate and diagnostic purpose in subsequent investigations. results the highest expression of the cytochrome p450 cyp141 protein was obtained by the addition of 1 mm of isopropyl β-d-1-thiogal...

1. When vaccine virus and its specific antiserum are brought together, no evidence of stable union between them can be determined by the experimental methods employed. 2. A definite relationship exists between the degree of dilution of a neutral vaccine virus-antiserum mixture and the size of the lesion produced by endermic inoculation of rabbits of any given dilution.

vaccination has greatly improved human health. despite of all improvements in this field, there is not an efficient vaccine for many diseases, and of the available ones, some could not produce a long-term immunity. recently, there have been many researches on the applicability of nanostructures as an efficient system for vaccine delivery, and the initial results have been promising. their poten...

The present study was conducted to prepare oil emulsified (OE) infectious bronchitis (IB) experimental vaccines. The vaccines were prepared using the vaccinal strain H-120 Infectious Bonchitis virus (IBV). The virus was cultivated in 9-day old embryonated eggs via allantoic cavity route. Allantoicamniotic fluid (AAF) was collected and inactivated with formalin @ 0.12%. Water in oil emulsion was...