Five of the other homoisoflavanones (3–7) exhibits identical substitution patterns in ring A. Ring B of (1–7) contains either no substituent or substituents varying in hydrophobicity, electronic properties or size. The susceptibility of C. albicans to compounds (1–7) was determined and is depicted in Fig. 4. The MIC50 values suggest the potency of the synthesized compounds, whilst the Emax values suggest their efficacies. A relatively

low potency, indicated by a higher MIC50 value, suggests that higher selleck chemicals llc concentrations are needed to achieve 50% antifungal activity. Efficacy is indicative of the maximum response obtainable, with 100% suggesting that fungal growth is completely inhibited. The MIC50 and Emax values are summarized in Table 2. Compound 3 exhibited the highest potency and highest efficacy. The potency of this compound (IC50 = 25 μM) is considerably better than that of the control drug clotrimazole (IC50 = 42 μM), although the

compound could not reach 100% efficacy even at higher concentrations, suggesting fungistatic activity. Amongst compounds (4–7), compound 5 exhibited the highest efficacy, followed by compounds (6–7) with slightly lower efficacies and compound 4 with the lowest efficacy. Compound 4 also showed the lowest potency. The potencies of compounds 5 and 7 were approximately 2-fold lower than compound 6. Structural differences were investigated in order to explain the differences in efficacy and potency. Compounds SAHA HDAC in vivo (4–7) has identical substitution patterns in ring A namely 5,7-dimethoxy substitution. The B ring of 3 is unsubstituted but compounds (4–7) are substituted respectively much with hydroxy, methoxy, chloride and fluoride substituents in the 4′-position of the B ring. These results suggest that the size and hydrophobicity of the substituents may play a role in the activity. Both 1 and 4 contain a 4′-hydroxy group in ring B and respectively 7,8-dimethoxy or 5,7-dimethoxy substituents in ring A. Compound 1 exhibited higher potency and efficacy than 1. This

result suggests that the 7,8-dimethoxy substitution pattern leads to reduced activity in compounds substituted with a hydroxy group in ring A. The in vitro cytotoxicity of compounds (1–7) was investigated and the IC50 values are represented in Table 3. Assessment of cytotoxicity in mammalian cells is important in the development of new drugs to ensure selectivity between species. Even if the cytotoxicity profile of a compound is not favourable, it does not prohibit its future development. Many fungal infections are superficial and topical application of drugs may reduce systemic toxicity. Compounds 3, 6 and 7 were most toxic with IC50 values between 8 and 15 μM. Compounds 1 and 5 showed slight cytotoxicity and compound 2 was not cytotoxic at the concentrations tested. All these compounds were much less cytotoxic that the reference drug emetine (0.125 μM).

The limited information relating to the size, membership, meeting structure, methods of functioning, and processes of final decision-making that was available indicated that these attributes varied greatly

across ITAGs [2]. Despite the limited information published, overall there is recognition of the importance of national BKM120 molecular weight ITAGs. Supporting countries in strengthening or establishing national ITAGs is a priority for WHO at headquarters and at the regional level [7], [8], [9] and [10]. We conducted a global survey to collect information on the development processes guiding national immunization policies in all countries. The survey specifically focused on the presence,

characteristics, and processes of national ITAGs. The overall objective of the project was to produce a global depiction of immunization policy development processes, particularly detailing the form and function of national ITAGs. This paper reports the results collected from countries with a national ITAG while the results of all respondents are summarized elsewhere [11]. Characteristics of national ITAGs are described as well as attributes of these groups that would seem important for an effective ITAG. The information reported in this paper was collected through two questionnaires. MK0683 chemical structure One questionnaire, hereinafter referred to as the global questionnaire, included all member states of the African,

American, Eastern-Mediterranean, South-East Asian, and Western Pacific regions (140 countries) as per WHO subdivision [12]. The other questionnaire, hereinafter referred to as the European questionnaire, surveyed the Member States of WHO within the European region (53 countries) [13]. These countries were sampled separately as this was an already ongoing regional initiative. The questionnaires 3-mercaptopyruvate sulfurtransferase were similar as the European had been adjusted to enhance compatibility. The methods of the global survey are described in detail in another paper [11]. However, in order to facilitate comparison, a brief summary of the methods used in both surveys is included here. Many of the questions on the global and European questionnaires were identical and common topics included the terms of reference, membership and declaration of interests, modes of operation, and the use of evidence from national ITAGs. The global questionnaire also collected information on the functions, funding, additional players such as the chair, executive secretary, immunization program manager and working groups, evaluation of evidence, and communication strategies of national ITAGs. The questionnaires contained closed and open-ended questions.

After 2–3 passages, further recombination between the repeated TK flanking regions results in either reversion to the starting virus (MVA–RFP) or formation of the markerless recombinant virus MVA-PfM128. White plaques (expressing neither RFP nor GFP) were picked and purified. Presence of the PfM128 antigen at the TK locus was confirmed by sequencing and PCR. The protein vaccine used was mono-allelic Wellcome strain MSP119 expressed in the yeast P. pastoris (kindly provided by A Holder, NIMR, London) [33]. The full sequence of this antigen is represented within the viral vector vaccines. Protein

in endotoxin-free PBS was mixed LY294002 ic50 manually in a syringe immediately prior to immunization with Montanide ISA720 adjuvant (SEPPIC, France), in the ratio 3:7 as previously described [40]. Where applicable, viral vectored vaccines were incorporated in the protein-PBS fraction of this mixture. BALB/c mice were vaccinated at 8- or 14-week intervals with doses as follows (unless otherwise specified): 1010 virus particles (vp) for AdCh63; 107 plaque forming units (pfu) for MVA; and 20 μg of protein. C57BL/6 mice were vaccinated at 8-week

intervals with 108 vp AdCh63, 106 pfu MVA, or 5 μg protein. Blood was obtained for immunological studies using tail bleeds 2 weeks after each immunization and at later time points as described. Ex vivo IFNγ enzyme linked immunosorbent assays (ELISPOT) were performed as previously described [41], using peptides appropriate to the mouse strain as follows: either the overlapping peptides 90 and 91 (NKEKRDKFLSSYNYI and DKFLSSYNYIKDSID) which comprise Afatinib the immunodominant CD8+ T cell epitope in PfMSP133 (Wellcome allele) in BALB/c mice; or the PfMSP119 (3D7 allele)-derived peptide 215 (TKPDSYPLFDGIFCS) recognised first by CD8+ T cells from C57BL/6 mice [5]. Antigen-specific splenic antibody

secreting cells (ASCs) were measured as previously described [42]. In brief, nitrocellulose bottomed 96-well Multiscreen HA filtration plates (Millipore, UK) were coated with 5 μg/ml P. falciparum MSP-119 (Wellcome/FVO allele, expressed in Pichia) [33] and incubated overnight at 4 °C. Plates were washed twice with PBS and blocked for 1 h at 37 °C, 5% CO2 with D10 (MEM α-modification, 10% Fetal Calf Serum, 4 mM l-glutamine, 100 U/ml penicillin and 100 μg/ml streptomycin (all from Sigma, UK); and 50 μm 2-mercaptoethanol (Gibco)). 5 × 105 splenocytes were plated onto the pre-coated ELISPOT plate per replicate well and serially diluted. Plates were incubated for 5 h at 37 °C, 5% CO2. Following incubation plates were washed twice with PBS and incubated overnight at 4 °C with biotinylated anti-mouse γ-chain specific IgG antibody (CALTAG, CA). Assays were developed using colour developing agents (Bio-Rad AP conjugate substrate kit) that were filtered through a 0.2 μm filter (Sartorius, UK).

Found: C, 79.11; ISRIB nmr H, 5.57; N, 11.09; O, 4.20. (1H-indol-2-yl)(5-(4-nitrophenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)methanone7f.

Yellowish, m.p: 169–171 °C; IR vmax (cm−1)*; 1H NMR (400 MHz, DMSO-d6) δ (ppm)#; 13C NMR (100 MHz, DMSO-d6) δ (ppm)#; MS (EI): m/z 411.38 (M+1)+. Anal. calcd. for C24H18N4O3: C, 70.23; H, 4.42; N, 13.65; O, 11.69. Found: C, 70.21; H, 4.40; N, 13.67; O, 11.67. (5-(4-chlorophenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)(1H-indol-2-yl)methanone7g. Blackish, m.p: 182–184 °C; IR vmax (cm−1)*; 1H NMR (400 MHz, DMSO-d6) δ (ppm)#; 13C NMR (100 MHz, DMSO-d6) δ (ppm)#; MS (EI): m/z 400.92 (M+1)+. Anal. calcd. for C24H18ClN3O: C, 72.09; H, 4.54; N, 10.51; O, 4.00. Found: C, 72.09; H, 4.53; N, 10.50; O, 4.02. (1H-indol-2-yl)(5-phenyl-3-m-tolyl-4,5-dihydro-1H-pyrazol-1-yl)methanone7h. Yellowish, m.p: 176–178 °C; IR vmax (cm−1)*; 1H NMR (400 MHz, DMSO-d6) δ (ppm)#: 2.31 (s, 3H); 13C NMR (100 MHz, DMSO-d6) δ (ppm)#; MS (EI): m/z 380.40 (M+1)+. Anal. calcd. for C25H21N3O: C, 79.13; H, 5.58; N, 11.07; O, 4.22. Found: Z-VAD-FMK cost C, 79.16; H, 5.56; N, 11.05; O, 4.24. (5-(4-hydroxyphenyl)-3-m-tolyl-4,5-dihydro-1H-pyrazol-1-yl)(1H-indol-2-yl)methanone7i. Brownish, m.p: 189–191 °C; IR vmax (cm−1)*; 1H NMR (400 MHz, DMSO-d6) δ (ppm)#: 5.32 (s, 1H, –OH), 2.31 (s, 3H, –CH3); 13C NMR (100 MHz,

DMSO-d6) δ (ppm)#; MS (EI): m/z 396.51 (M+1)+. Anal. calcd. for C25H21N3O2: C, 75.93; H, 5.35; N, 10.63; O, 8.09. Found: C, 75.95; H, 5.36; N, 10.61; O, 8.11. (1H-indol-2-yl)(5-(4-methoxyphenyl)-3-m-tolyl-4,5-dihydro-1H-pyrazol-1-yl)methanone7j. Yellowish, m.p: 162–164 °C; IR vmax (cm−1)*; 1H NMR (400 MHz, DMSO-d6) δ (ppm)#: 3.85 (s, 3H, –OCH3), 2.32 (s, 3H, –CH3); 13C NMR (100 MHz, DMSO-d6) δ (ppm)#; MS (EI): m/z 410.52 (M+1)+. Anal. calcd. for C26H23N3O2: C, 76.26; H, 5.66; N, 10.26; O, 7.81. Found: C, 76.28; H, 5.64; N, 10.25; O, 7.83. (5-(4-hydroxy-3-methoxyphenyl)-3-m-tolyl-4,5-dihydro-1H-pyrazol-1-yl)(1H-indol-2-yl)methanone7k.

Casein kinase 1 Light black, m.p: 156–158 °C; IR vmax (cm−1)*; 1H NMR (400 MHz, DMSO-d6) δ (ppm)#: 5.32 (s, 1H, –OH), 3.83 (s, 3H, –OCH3), 2.38 (s, 3H, –CH3); 13C NMR (100 MHz, DMSO-d6) δ (ppm)#; MS (EI): m/z 426.36 (M+1)+. Anal. calcd. for C26H23N3O3: C, 73.39; H, 5.45; N, 9.88; O, 11.28. Found: C, 73.37; H, 5.48; N, 9.86; O, 11.30.

15 Evidence was rated down for publication bias if the individual trials were commercially funded. 16 The overall quality of evidence was then based on the lowest quality rating for the outcome. 17 Only randomised trials were eligible, including crossover trials if outcome Sunitinib in vitro data were available for each intervention prior to the crossover. Studies published in languages other than English and Swedish were excluded. The age and pain severity of the participants with primary dysmenorrhoea were recorded to describe the trials. Trials involving participants with secondary

dysmenorrhoea, that is, individuals with an identifiable pelvic pathology or chronic pelvic pain, were excluded. Trials that compared different forms of the same treatment (eg, different modes of TENS) were excluded. The effect of physiotherapy had to be distinguishable from the effects of other treatment. For example, where participants were permitted to take analgesics during the study, analgesic use was required to be consistent for all groups. For each included study, two reviewers independently extracted the sample size, details of the intervention and control, time points of outcome selleck screening library measurement, and pre- and post-intervention means. Where possible, data presented in other formats were converted to mean and SD for inclusion in meta-analysis.

Meta-analysis was carried out for pain intensity immediately post-intervention using Review Manager 5.18 Separate meta-analyses were completed for no-treatment-controlled trials and for placebo/sham-controlled trials. Weighted mean differences were calculated for the analyses. In the meta-analyses and throughout the Results section, all data from pain scales were converted to a 10-point scale. A fixed-effect model was used where heterogeneity was minimal (as shown by the χ2 and I2 values) and otherwise, a random-effects model was used. Statistical

Resveratrol significance was set at p ≤ 0.05. The initial searches identified 222 potentially relevant papers. The flow of papers through the process of assessment of eligibility is presented in Figure 1, including the reasons for exclusion of papers at each stage of the process. The specific papers identified within each database by the search strategy are presented in Appendix 1 (See eAddenda for Appenidx 1). We contacted study authors when data were not reported in the format that allowed inclusion in the review.7 The data could not be obtained in a suitable format, so it was excluded. In total, the 11 included trials contributed data on 793 participants. The quality of the included trials is presented in Table 1, the grade of evidence for each outcome is presented in Table 2, and a summary of the included trials is presented in Table 3. The methodological quality of the included trials ranged from low to high, with a mean PEDro36 score of 6.5 out of 10, as presented in Table 1.

We will refer to these as ‘alternative exercises’. Alternative

exercises include training of the deep abdominal muscles, contraction of the ring muscles of the mouth and eyes (the Paula method), Pilates exercise, yoga, Tai Chi, breathing exercises, posture correction, and general fitness training. The effectiveness of some alternative exercise regimens was also explored by Hay-Smith et al (2011), but these exercises were not the focus of that Cochrane review. A framework for this review is provided by our paper on how new therapies become incorporated into clinical practice (Bø and Herbert 2009). In Talazoparib cell line that paper we presented a three-phase protocol for the introduction of new therapies into clinical practice (Box 1). The central idea is that the development phase for new therapies involves clinical observation, laboratory studies, clinical exploration, and pilot clinical trials. Once there are sufficient data from such studies to believe that the therapy could be effective, its effectiveness is tested with a randomised

controlled trial. We argued, I-BET-762 solubility dmso as have many before us (eg, Chalmers 1977), that new therapies should not be considered to have been shown to be effective, or be introduced into routine clinical practice, until they have been shown to have clinically important effects in properly conducted randomised controlled trials. Thus the testing phase involves the conduct of randomised trials. Lastly, once an intervention has been shown to be effective, usually with and more than one randomised trial ( Ferreira et al 2012), further trials may be conducted to examine how best to administer the therapy and to whom the therapy is best

administered. This is the refinement and dissemination phase. It is only at this last phase that clinicians should be actively encouraged to adopt the new therapy. However, not all therapies thought to be effective in the first phase will be shown to be effective in clinical trials. We will classify alternative interventions for treatment of stress urinary incontinence or mixed urinary incontinence according to whether they are currently in the Development Phase, the Testing Phase, or the Refinement and Dissemination Phase. Stage 1: Clinical observation or laboratory studies Development Phase Stage 2: Clinical Stage 3: Pilot studies Stage 4: Randomised clinical trials Testing Phase Stage 5: Refinement Refinement and Dissemination Phase Stage 6: Active dissemination Full-size table Table options View in workspace Download as CSV We conducted a systematic review to examine evidence of the effectiveness of these alternative exercise regimens.

However, the best strategy has yet to be developed as it does not appear that pasteurizing maternal milk changes the overall incidence

of late onset GBS disease in preterm infants [38]. In a recent review article of cases of late onset GBS disease from breast milk, GBS was found in 0–2% of raw milk samples and 1.4% of pasteurized milk samples [9]. Two main mechanisms of acquisition have been proposed: following colonization of the neonatal oropharynx at the time of birth, mothers may develop colonization of the milk ducts through ascending infection from the neonate, due to the retrograde flow of milk associated with suckling. The infant is then reinfected as the concentration of bacteria increases in the breast milk [39]. This may occur with or without mastitis depending AZD6244 cost on additional factors such as milk stasis

and bacterial load [40]. In most of the case reports of GBS disease associated with breast milk there is no sign of maternal mastitis, indicating silent maternal duct colonization [9]. However, recent studies in animal models and discovery of lactobacilli in breast milk after oral administration suggest that bacteria from the maternal digestive tract may also colonize the breast. [41] It has also been suggested that lactic acid bacteria may transfer from the mother’s gut to breast milk and through the milk to the infant’s digestive tract [42]. The epidemiological relationship between neonatal Fludarabine concentration and maternal derived GBS isolates in breast milk has been confirmed by polymerase chain reaction (PCR) [43]. However, it is not clear whether the LO disease relates to infected breast milk or is a result of gut translocation from an already colonized infant. GBS may infect the submucosa of the gastrointestinal tract either through

a defect in the epithelial cell layer, or by concomitant infectious agents [33]. As neonatal gastric acid secretion is reduced, more bacteria may reach the intestinal mucosa. This is supported by findings that preterm infants fed with contaminated maternal milk via nasogastric tube have developed CYTH4 GBS disease [44]. Breast milk is the main source of non-pathogenic bacteria to the infant gastrointestinal tract. Intestinal bacteria are one of the most important stimuli for the development of mucosa-associated lymphoid tissue (MALT) in the neonatal small intestine [45] and produce organic acids that prevent growth of enteric pathogens. Additionally, breast milk and colostrum contain many components with antimicrobial and immunomodulatory properties that are believed to impair translocation of infectious pathogens [46]. Some of these substances compensate directly for deficiencies in the neonatal immune system and enhance survival of defense agents, including secretory IgA (SIgA), lactoferrin, lysozyme, IFN-γ; some adapt the gastrointestinal tract to extrauterine life, i.e.

This can be considered a limitation of this study. In a recent study, Siberry et al. evaluated the quadrivalent meningococcal conjugate vaccine in HIV-infected patients [19]. The authors found that CD4 counts and HIV viral loads correlated with the immune response

achieved after vaccination. However, unlike our study, in which a CD4 count <100 cells/mm3 was an exclusion criterion, that study did not exclude patients with low CD4 counts. We found a statistically significant difference between the HIV-infected and non-HIV-infected patients in terms of the side effects of the meningococcal serogroup C conjugate vaccine, which were more common in the non-HIV-infected patients. No serious side effects were observed in either group, INCB024360 indicating that the vaccine is safe, as reported in prior studies [26]. One explanation for the fact that HIV-infected patients reported fewer side effects is that these patients are often submitted to medical procedures, such as blood draws and vaccinations, and might therefore be more tolerant to pain, myalgia, and other symptoms. In conclusion,

the meningococcal serogroup C conjugate vaccine was found to be effective for HIV-infected children, adolescents, and young adults, although the antibody response obtained was weaker than that obtained in the non-HIV-infected patients. Knowledge of this response could suggest the need to alter the immunization schedule ever for HIV patients in these age groups, probably by adding a booster dose of meningococcal vaccine, thus Dinaciclib cell line ensuring more effective

protection against meningococcal disease. We would like to thank the volunteers who participated in the study and their parents/guardians, as well as the nurses and other staff members, without whom this study would not have been possible. The authors are also grateful to Silvia Figueiredo Costa, MD, for her generous efforts in supporting the implementation and standardization of the laboratory analysis, to Bruno Stuart de Castro and Tadeu Pernichelli for their excellent laboratory technical assistance, and to Mariliza Henrique da Silva, MD, and Adriana Balduíno de Azevedo for their support and encouragement. Conflict of interest statement: None declared. Funding: This study received financial support in the form of a grant from the Brazilian Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, National Council for Scientific and Technological Development; Grant no. 478687/2008-7). “
“Epidemics of bacterial meningitis caused by Neisseria meningitidis, the meningococcus, were first reported in Brazil in 1920 [1]. Meningococcal epidemics since the 1970s have been associated with serogroups B and C (the last meningococcal A epidemic in Brazil occurred in 1974) [2].

, 2007).

We hypothesize CSF-1R inhibitor that inhalation delivery of the TR3 activator C-DIM-5 and the TR3 deactivator C-DIM-8 along with intravenous (i.v.) administration of docetaxel (doc) will provide an enhanced antitumor activity in NSCLC. In this study, we investigated the feasibility of aerosolizing C-DIM-5 and C-DIM-8 for evaluating their anticancer activities alone and in combination with doc in a metastatic mouse lung tumor model. C-DIM-5 and C-DIM-8 were synthesized as described (Chintharlapalli et al., 2005). The Mouse Cancer PathwayFinder RT2 Profiler™ PCR Array was from SABiosciences (Valencia, CA) and Trizol reagent was from Invitrogen (Carlsbad, CA). BCA Protein Assay Reagent Kit was procured from Pierce (Rockford, IL). TR3, β-actin, MMP2, MMP9, rabbit anti-mouse antibody and secondary antibodies were from Santa Cruz Biotechnology (Santa Cruz, CA.). CD31, VEGFR2, p21, survivin, PARP, cleaved-PARP, cleaved caspase3, cleaved caspase8, Bcl2, and NFk-β, β-catenin, c-Met, c-Myc, and EGFR primary antibodies were purchased from Cell Signaling Technology (Danvers, MA). A549 cell line was obtained from American Type Culture

Collection (Manassas, VA, USA). A549 cells were maintained in F12K medium supplemented with 10% FBS and penicillin/streptomycin/neomycin at 37 °C in the presence of 5% CO2 under a humidified atmosphere. The cell line throughout culture and during the duration of the study was periodically tested for the presence of mycoplasma by polymerase

chain reaction (PCR). Cells used for learn more the study were between 5 and 20 passages. All other chemicals Bay 11-7085 were of either reagent or tissue culture grade. The in vitro cytotoxicity of C-DIM-5 and C-DIM-8 alone and in combination with doc was evaluated in A549 cell line as previously reported ( Chougule et al., 2011 and Patlolla et al., 2010). A549 (104 cells/well) cells was seeded in 96-well plates and incubated at 37 °C for 24 h. The cells were treated with concentrations of doc, C-DIM-5, C-DIM-8 or DMSO. The effects of doc in combination with C-DIM-5 or C-DIM-8 were also carried out and cell viability in each treatment group was determined at the end of 24 h by the crystal violet dye assay ( Ichite et al., 2009). The interactions between doc and C-DIM-5 or C-DIM-8 were evaluated by isobolographic analysis by estimating the combination index (CI) as described ( Luszczki and Florek-Łuszczki, 2012). Hence, a CI > 1 indicates antagonism; CI = 1 indicates additive effect; and a CI < 1 indicates synergism. The acridine orange-ethidium bromide (AO/EB) staining method was used to investigate induction of apoptosis in A549 cells. The procedure as previously described (Ribble et al.

These interviews were conducted Selleckchem Akt inhibitor by e-mail, telephone conference calls, and personal contacts. Vaccine development is a long, complex, expensive and risky process. It follows a standard set of stages to demonstrate that a vaccine is safe, immunogenic and protective before it is licensed and marketed (Fig. 1). This requires significant and diverse resources and expertise, and results from the contribution of

several public and private actors. Basic research regarding pathogens and immune responses is supported by a cross-section of academic and government organizations and industry, whereas development-related and clinical research programs are funded primarily by industry. Large vaccine companies are involved in significant amounts of targeted research, but their preponderant role is in clinical and process development. Small biotechnology companies are playing an increasingly important role in the vaccine industry. They are often

started by university scientists, supported by venture capitalists, and apply novel PF-02341066 solubility dmso technology to translate basic research into vaccine candidates in the early stages of clinical development (phase I and II/proof of concept in humans). If research results are favorable, major vaccine producers will enter into pro-active partnerships to ensure capacity in process development, phase III clinical trials, registration and manufacturing [2], [3], [4], [5], [6] and [7]. While large vaccine companies increasingly externalize research in order to access new areas of science and share the risk of development with partners [8], only they have the necessary expertise and know-how in project management and the various disciplines necessary to achieve vaccine development, Electron transport chain navigate regulatory pathways and manufacture vaccines to international standards. It

usually takes 12–15 years to develop a new vaccine (ranging from 7 years to >20 years). Estimates of the total cost for vaccine development varies, depending on what is measured. If one includes R&D costs on products that fail, post-licensure clinical studies, and improvements in manufacturing processes, these costs can climb to over $1 billion. For vaccine companies, each successful product has to recover not only the costs of its design and development, but also the costs of the unsuccessful candidates [2], [9] and [10]. Vaccine development follows a graduated funnel that involves several stages: basic and applied research, preclinical testing, clinical testing, regulatory approval, production and distribution [2], [3], [4], [5], [6] and [7]. At each of the different stages, even the most promising candidates can fail to perform as anticipated and can be either abandoned or modified and re-tested. Only relatively few vaccines make the jump from the laboratory to clinical trials. The cumulative probability from pre-clinical to launch for a vaccine is 0.22 (0.39 from Phase I to launch; 0.64 from Phase II to launch; 0.