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TH2-biased immune responses are associated with inadequate protection against some pathogens and with cancer, colitis, asthma and allergy. Since most currently used vaccine adjuvants induce a TH2-biased response, this has led to interest in developing adjuvants capable of activating TH1 immunity and modulating existing TH2 responses. Immunotherapies to shift immune responses from TH2 to TH1 have generally...
Propionibacterium acnes was modified using biochemical extraction methods generating a suspension of microparticles (MIS416) comprising a minimal cell wall skeleton rich in immunostimulatory crosslinked muramyl dipeptide repeats and native bacterial DNA fragments, each which have known adjuvant activity. In vitro studies demonstrated that MIS416 was readily internalized by human myeloid and plasmacytoid...
This study provides Australian data on the incidence of human papillomavirus (HPV)-related oropharyngeal cancer to aid the debate on extending the HPV vaccination programme to males. The HPV status for 302 oropharyngeal cancers diagnosed between 1987 and 2006 was determined by HPV E6-targeted multiplex real-time PCR/p16 immunohistochemistry. The overall HPV-positivity rate was 36% (94% types 16 and...
Fasciola hepatica infection causes significant clinical disease in ruminants. Current control methods, based on flukicidal drugs, are becoming less useful because of resistance in fluke populations. Vaccination would be a viable alternative, but as yet no vaccine to protect ruminants against liver fluke infection has been commercialised. Adjuvants can be used to enhance and promote protective immune...
To control the devastating group B meningococcal epidemic in New Zealand a strain-specific OMV vaccine (MeNZB) was extensively tested before vaccination of >1,000,000 people under 20 years. After the three-dose course 75% of 6–8-month-old infants and 16–24-month-old toddlers showed four-fold increases in bactericidal antibodies. In 6–10-week-old infants a fourth dose was needed to obtain similar...
MenBvac is an OMV vaccine against systemic serogroup B Neisseria meningitidis disease. MenBvac was developed for control of a B:15:P1.7,16 subtype epidemic in Norway and administered to 180,000 subjects in 28 clinical studies. MeNZB, a daughter vaccine of MenBvac, was developed for a clonal B:4:P1.7b,4 epidemic in New Zealand and administered to 1 million people <20 years. The vaccines were similar...
As the first step towards control of a strain specific epidemic of meningococcal disease in New Zealand (NZ), this study, an observer-blind, randomised controlled trial in 75 healthy adults, evaluated safety and immunogenicity of two different dosages of a meningococcal group B vaccine administered in a three dose regime. The “tailor-made” outer membrane vesicle (OMV) vaccine (candidate vaccine) developed...
Provisional licensure of the trial vaccine, MeNZB™, required demonstration of immune responses in vaccines, as measured by a validated Serum Bactericidal Assay (SBA). Reported are the investigations undertaken to define test parameters, lower limits of quantitation and measurement of SBA reproducibility. Results helped to formulate the operating procedure for the measurement of serum bactericidal...
Control measures to limit the spread of a cholera outbreak in Pohnpei Island (Micronesia), included mass vaccination with the single-dose live-attenuated oral cholera vaccine CVD 103-HgR as a potential adjunct measure. The outbreak provided a unique opportunity to evaluate the practicality of use and effectiveness of this vaccine. Under field conditions encountered in Pohnpei, crude vaccine efficacy...
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