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The standard serological methods present limitations for the measurement of immunity against H5N1 influenza strains. The hemagglutination inhibition (HI) assay lacks sensitivity and requires standardization, while the viral micro-neutralization (MN) assay needs handling of live virus. We produced pseudoparticles expressing hemagglutinin from clades 1 or 2 H5N1 in order to measure neutralizing antibodies...
Influenza is controlled by protective titres of neutralizing antibodies, induced with the help of CD4 T-cells, and by antiviral T-cell effector function. Adjuvants are essential for the efficient vaccination of a naïve population against avian influenza. We evaluated a range of adjuvants for their ability to enhance, in naïve mice, protective hemagglutination inhibition (HI) titres, which represent...
A monovalent influenza split vaccine was microencapsulated in poly(d,l-lactic-co-glycolic acid) (PLGA) and ABA triblock copolymers using a W/O/W double emulsion technique. To stabilize the antigen, influenza vaccine was also coencapsulated with liposomes. Antigen release from microspheres was determined in vitro using a hemagglutinin-specific ELISA. PLGA-microspheres with liposomes released immunoreactive...
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