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Gold dimensions of pharmaceutical drug development indicate that it takes on average 11.9 years, with an investment around US$ 0.8 Billion, to launch one product on the market. Furthermore, approximately 22% of the drug candidates successfully complete clinical testing. These universally acknowledged proportions largely originate from one single, much cited publication; Dimasi et al. [5]. However...
Several inactivated influenza vaccine formulations for systemic administration in man are currently available for annual (seasonal) immunization: split virus and subunit (either plain-aqueous, or virosomal, or adjuvanted by MF59). From a literature search covering the period 1978–2009, 33 articles could be identified, which described randomized clinical trials comparing at least two of the four vaccine...
A candidate influenza H5N1 vaccine based on cell-culture-derived whole inactivated virus and the novel adjuvant CoVaccineHT™ was evaluated in vitro and in vivo. To this end, mice were vaccinated with the whole inactivated influenza A/H5N1 virus vaccine with and without CoVaccineHT™ and virus-specific antibody and cellular immune responses were assessed. The addition of CoVaccineHT™ increased virus...
Highly pathogenic avian influenza viruses of the H5N1 subtype are responsible for an increasing number of infections in humans since 2003. More than 60% of the infections is lethal and new infections are reported frequently. In the light of the pandemic threat caused by these events the rapid availability of safe and effective vaccines is desirable. Modified vaccinia virus Ankara (MVA) expressing...
Examples of vaccine-induced enhancement of susceptibility to virus infection or of aberrant viral pathogenesis have been documented for infections by members of different virus families. Several mechanisms, many of which still are poorly understood, are at the basis of this phenomenon. Vaccine development for lentivirus infections in general, and for HIV/AIDS in particular, has been little successful...
In the present paper, an in vitro model was established in which the interaction between influenza virus-specific CD8+ T cells and human airway epithelial cells can be studied. To this end, the human lung epithelial cell line A549 was transduced with the HLA-A*0201 gene. This MHC class I allele is involved in the presentation of the immunodominant M1 58-66 cytotoxic T lymphocyte...
Dialysis patients show impaired responses to several vaccines. Limited recent data are available on influenza vaccination in these patients. In the 1998-1999 influenza season, 44 dialysis patients received a standard trivalent vaccination followed by a booster two months later. The serum antibody responses in these patients were compaired with those found in healthy subjects. A fourfold rise in serum...
Although current influenza vaccines have been shown to reduce influenza-related morbidity and mortality, there is a desire to develop more efficacious products. Vaccines which can induce CD8 + cytotoxic T cell (CTL) responses in addition to strong antibody responses may be more effective in preventing disease since it has been demonstrated that CTL contribute to protective immunity, even against...
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