Manufacturing of recombinant proteins in plants for influenza vac

Manufacturing of recombinant proteins in plants for influenza vaccine development evolved as an alternative to the conventional egg-based vaccine production to overcome the limitations in quantity and time consumption [13]. This

bottleneck of egg-produced vaccines can have serious consequences during influenza PF-06463922 nmr pandemics, when the production of sufficient amounts of vaccine in an adequate time frame to serve the global market could be difficult. Regarding the need of rapidly produced vaccines in times of pandemics and the time consuming limitation of the egg-based vaccines, the here presented study tested the recombinant antigen of a highly immunogenic H1N1 strain responsible for the 2009/2010 pandemic. Furthermore, the study extends the

published work with HAC1 and SiO2 and evaluates the immunogenicity of this vaccine formulation when combined with c-di-GMP and administered at the site of virus entry. Overall, it showed the potential of the c-di-GMP/SiO2 double-adjuvanted vaccine to induce systemic humoral and strong mucosal immune responses, with IgA in the airways. Furthermore, it presented evidence of antigen-primed T-cells in the lung in intratracheally vaccinated mice. Female wild-type BALB/c mice Doxorubicin datasheet aged 6–8 weeks (Charles River, Sulzfeld, Germany) were kept at an animal facility under conventional housing conditions (22 °C, 55% humidity, 12-h day/night cycle) with food and tap water ad libitum. The randomized study was approved by a local agency (Application-No. 33.9-42502-04-11/0465) and conducted according to the German Animal Protection law. Reagents were, if not stated otherwise, purchased from Sigma–Aldrich (Munich, Germany). Phosphate buffered saline (PBS) without Ca2+ and Mg2+, pH 7.4, Dulbecco’s Modified Eagle’s Medium/Nutrient

Mixture F-12 HAM (DMEM) with l-glutamine, 15 mM HEPES and 7.5% w/v sodium bicarbonate without phenol red, pH 7.2–7.4, Fossariinae RPMI 1640 and Earle’s Balanced Salt Solution (EBSS) were obtained from Gibco (Darmstadt, Germany). Cell/tissue cultivation medium was supplemented with 100 U/mL penicillin and 100 μg/mL streptomycin. HAC1 was produced as previously described [14]. Briefly, the HA nucleotide sequence, encompassing amino acids 18–530 of the A/California/04/09 influenza strain (H1N1, NCBI accession number ACQ76318.1) were optimized for expression in plants and synthesized. The optimized HA sequence contains a 6× His affinity purification tag and the ER retention signal KDEL at the C-terminus. This gene was inserted into the pGRD4 launch vector and transformed into Agrobacterium tumefaciens. The transformed bacterium was introduced into hydroponically grown Nicotiana benthamiana by vacuum infiltration and leaf tissues were harvested, homogenized, extracted, filtered and chromatographically purified after a one-week growing period [14]. Aliquots of purified HAC1 were kept in PBS at −80 °C until usage.

3) In the next phase of analyses we

attempted to identif

3). In the next phase of analyses we

attempted to identify if different scientific, economic, societal and ethical perspectives led the discussants to arrive at dissimilar conclusions from available evidence base. This required referring to the original articles that the discussants used in building their arguments. Part of this exploration included identifying if same evidence was interpreted differently by different discussants. Capmatinib purchase We also took recent and emerging evidence into account. Of the 177 articles resulting from the data screening process (Fig. 2), 117 were from the domain of ‘epidemiology’, 39 from ‘vaccine’ and 21 from ‘debate’. Articles retrieved under ‘debate’ comprised efficacy, adverse events and immunization performance related discussion, perceptions of pediatricians toward immunization against

rotavirus, as well as policy matters. ‘Vaccine’ articles encompassed clinical trials, mechanisms of action, and inhibitory factors related to oral live vaccines, vaccine uptake by general population in urban and rural settings, as well as economic issues. Most of the articles in ‘epidemiology’ were on hospital based studies, and only 14 out of 117 articles (12%) BKM120 in vitro described community based investigations. While 10 community based studies were carried out over the last decade, the rest were from an earlier time. Apart from articles referring to rotavirus group A, group B rotavirus studies (occurring rarely and mostly in adults) also featured in our search. Nine articles dealing with infrequent rotavirus genotypes of group A and five about group

B were not included during detailed analysis and thus a total of 163 articles (103 from ‘epidemiology’, PD184352 (CI-1040) 39 from ‘vaccine’ and 21 from ‘debate’) were analyzed in-depth. Original research and review articles were used in the citation for the present write-up, as deemed appropriate. The earliest article documenting rotavirus in children in India appeared from Vellore in Tamilnadu [15] within a year of its first detection in Australia [16]. We noticed that articles on rotavirus diarrhea subsequently started appearing from various parts of the country, including north-eastern states [17], [18] and [19], all of which appeared under ‘epidemiology’. Cognitive contents in articles used for detailed analyses were arranged into themes as shown in Fig. 3 for synthesizing arguments. The six emerging themes were – (a) disease burden, (b) host factors (mother and child), (c) macro-social environment, (d) the agent (rotavirus) and the vaccine, (e) immunization program issues, and (f) economic issues. Disease burden is presented here under two major headings, (a) morbidity and (b) mortality due to rotavirus diarrhea in India. Most of the information under this topic came from facility based studies [20], and we identified scarcity of data on morbidity and mortality in communities.

Purposive sampling was employed (Ritchie et al 2003) Inclusion cr

Purposive sampling was employed (Ritchie et al 2003).Inclusion criteria were COPD diagnosis (GOLD 2005), completion of an 8-week outpatient pulmonary rehabilitation course held either in a hospital gym or in one of four community venues within the last two years, and ability to access the pulmonary

rehabilitation venue independently. Exclusion criteria were no spoken English or requirement for transport provided by the hospital. We set out to include people with a range of experiences in relation to pulmonary rehabilitation to generate rich data and to introduce diversity whilst maintaining overall homogeneity (Finch and Lewis 2003). Using records held by the pulmonary rehabilitation team, eligible participants were placed into two groups, A and B, by the principal selleck screening library researcher. Group A had received input from pulmonary rehabilitation staff to assist with ongoing exercise following completion of the pulmonary rehabilitation course, either by choosing to attend a maintenance gym session run by pulmonary rehabilitation staff or by receiving an induction into an existing community class from pulmonary rehabilitation staff. Group B had not received any input

from pulmonary rehabilitation staff regarding ongoing exercise due either to choice or lack of opportunity for pulmonary rehabilitation staff to support their chosen exercise option. Suitable patients were approached via letter. Recruitment mTOR inhibitor continued until nine positive responses had been received from each group, in an attempt to secure six to eight participants per group. Data were analysed manually using a grounded theory approach (Charmaz 2006). Each segment of transcribed Phosphoprotein phosphatase data from Group A and B was coded openly. Frequently occurring codes were used to re-organise and integrate the data into broader categories and themes, and inter-theme relationships were identified. Mind-maps facilitated this iterative process (Braun and Clarke 2006). An experienced qualitative researcher (HF) reviewed the coding process to enhance analysis credibility. The observer (AG) reviewed

the findings independently and concurred with the themes identified. Respondent validation was carried out by two participants in each focus group, who agreed that the analysis accurately reflected their discussion. To guard against a selective narrative, the researcher purposely chose individuals who, between them, embodied a range of views within the dataset (O’Neill Green et al 2010). The results were reviewed by two expert pulmonary rehabilitation practitioners, who confirmed that the findings were meaningful and credible in relation to personal experience. A critically reflexive account and audit trail were maintained throughout to establish dependability and confirmability (Holloway and Wheeler 2002). Of the 28 people approached by letter, 22 responded initially to express interest and 16 participated in the focus groups.

All studies reviewed here used culture to detect respiratory bact

All studies reviewed here used culture to detect respiratory bacteria. Therefore molecular testing of paired NP/OP samples is needed to establish if the recommendations for anatomic site of sampling apply also to studies using molecular detection of pneumococci. Conventional teaching is that nasal specimens are less sensitive than NP samples for detecting pneumococci. We identified only three studies directly comparing NP and nasal sampling methods for detecting pneumococci

in children (Supplementary Table 2). Rapola et al. [12] found that pneumococcal isolation rates from NP aspirates, NP swabs and nasal swabs did not differ. The same conclusion was reached by Carville et al. [13] for NP aspirates and nasal swabs, and Van den Bergh et al. Compound C [14] for NP swabs and nasal swabs. However, in two of these studies children had respiratory symptoms, either acute respiratory infection [12] or rhinorrhea [14], conditions that are known to enhance pneumococcal

carriage and possibly affect the sensitivity of detection from nasal specimens. As such, there is currently insufficient evidence to conclude that nasal swabbing is as effective as NP swabbing for the detection of pneumococcal carriage in healthy children. A fourth comparative study [15] found that NP washes performed better than NP swabs, but concluded that the additional gain was not sufficiently large to offset the discomfort and reduced acceptability to study subjects. Lieberman et al. [16] and Gritzfeld et al. [17] found no difference between NP swabs PCI-32765 mw and NP or nasal washes for the detection of pneumococci in adults with respiratory infection (Supplementary Table 2). The Oxygenase adults found nasal washes more comfortable than NP swabbing, but nasal washes were not recommended for children because of the level of participant cooperation required [17]. There are potential disadvantages of nasal/NP aspirates and washes for pneumococcal detection; the methods are difficult to standardize, and frequent washes in an individual

hypothetically may disrupt the flora or affect immune responses. Given that nasal or NP washing is generally less well tolerated by children, a single NP swab is preferred for the detection of pneumococcal carriage but washes/aspirates are an acceptable method [15]. NP swabbing techniques may vary across studies unless the investigators adhere closely to the standard method, summarized here. Hold the infant or young child’s head securely. Tip their head backwards slightly and pass the swab directly backwards, parallel to the base of the NP passage. The swab should move without resistance until reaching the nasopharynx, located about one-half to two-thirds the distance from the nostril to ear lobe (Fig. 1). If resistance occurs, remove the swab and attempt again to take the sample entering through the same or the other nostril. Failure to obtain a satisfactory specimen is often due to the swab not being fully passed into the nasopharynx.

Despite the limitations mentioned above, the ACCD has risen to th

Despite the limitations mentioned above, the ACCD has risen to these challenges by broadening its representation to include a range of stakeholders, and by being more transparent in its decision-making. This process will further evolve, and the adaptability of the Epacadostat Committee to changing situations will determine the future success of

the NPI and its contribution to the national development of Sri Lanka. The authors state that they have no conflict of interest. Authors wish to thank all Epidemiologists, Regional Epidemiologists and other staff of the Epidemiology Unit and members of the ACCD for their help in various stages of preparing this manuscript. The authors also acknowledge the contribution of Denise

DeRoeck. “
“Thailand is a middle-income country in Southeast Asia with a GDP per capita of US$ 4115 [1], a population of about 65 million and a birth cohort of around 800,000. The public health infrastructure in Thailand is designed to cover the entire population, both in rural and urban areas, with at least one community hospital in each of the country’s 926 districts, and one health care center in each sub-district. Secondary and tertiary care include general or provincial hospitals and GDC-0068 regional or university hospitals, respectively. The expanded program on immunization (EPI) is fully integrated into these basic health services. Thailand officially launched its nation-wide and immunization program (EPI) in 1977 by expanding and strengthening the existing immunization service infrastructure [2]. Currently, the Thai EPI includes vaccines that cover the following 10 antigens: tuberculosis (BCG), hepatitis B, diphtheria, tetanus (TT), pertussis, poliomyelitis (OPV), measles, mumps, rubella, and Japanese encephalitis (JE) (Table 1) [3]. Apart from the infant EPI vaccines, flu vaccine has been given to health care workers since 2004 and to people with certain chronic diseases since 2008. There also have

been a number of changes in vaccines and schedules over the years (Table 2). Vaccine procurement, technical support, and evaluation are carried out by the EPI at national level, while responsibility for implementing the program is decentralized to the country’s 76 provincial health offices. The Thai Ministry of Public Health has established a number of principles and policies concerning immunization. These include: the right of all people to be protected from vaccine-preventable diseases; the inclusion of immunization in the basic health services package; and the provision of safe, high-quality immunizations to all people free of charge. According to national policy, all public sector hospitals and health care centers must provide all immunizations included in the EPI schedule for free in well-baby clinics, and only private hospitals and clinics may charge for these services.

To measure rotavirus shedding, two fecal pellets were collected f

To measure rotavirus shedding, two fecal pellets were collected from each mouse each day for 7 days following EDIM challenge and processed as described above. Serum and two fecal pellets were collected immediately prior to challenge (week 6) for analysis of pre-EDIM antibody titers and again at week 9 for analysis of post-EDIM titers. We did not test sera for viremia. All statistical analyses were performed using the statistical software package GraphPad Prism, version 5. A two-sample t test was used when two groups were compared. ANOVA was used when more than two groups were compared,

with Bonferroni corrections for multiple comparisons of anti-rotavirus and total antibody corrected immunoglobulin levels. Mann–Whitney U and Kruskal–Wallis tests were used compare AUY-922 clinical trial data sets with non-parametric data as determined by a D’Agostino–Pearson normality test. Two-sided P values less than the Bonferroni corrected values were considered statistically significant. We randomized dams of 3-day-old litters to a purified control diet (CD: 15% fat, 20% protein, 65% CHO, N = 7) or an isocaloric regional basic diet (RBD: 5% fat, 7% protein, 88% CHO, N = 7) formulated to induce protein energy malnutrition ( Fig. 1). All pups of RBD dams showed reduced weight

( Fig. 2A) by DOL 9 compared to pups of selleckchem CD dams and remained underweight at the time of both RRV inoculation and EDIM challenge ( Fig. 2B; P < .0001 by RM ANOVA). RBD dams lost weight relative to CD dams as until early as pup DOL 9 and continued to lose weight until weaning (data not shown). To determine the effects of undernutrition on mouse responses to rotavirus vaccination, 22-day-old RBD and CD weanlings were immunized with either RRV (1.0 × 107 ffu/ml, N = 47) or PBS (N = 39) by oral gavage. RRV shedding was detectable in only 1 of 23 and 2 of 24 vaccinated CD and RBD mice, respectively. In separate experiments, we tested a 3-fold higher dose of RRV (3.0 × 107 ffu/ml) and detected viral shedding in 50% of all mice,

regardless of nutritional status (data not shown). To prevent over-immunization and masking potential effects of undernutrition on RRV-protection, we chose to perform our study with the original (1.0 × 107 ffu/ml) RRV dose. Comparing the response to RRV vaccine in RBD vs. CD animals by antibody levels obtained at week 6 (just prior to EDIM challenge) revealed that both anti-RV IgG and sera anti-RV IgA were increased in RBD mice relative to CD mice (Fig. 3A and B), however this difference was not significant when correcting for increases in total IgG and total sera IgA in RBD mice (Fig. 3D and E). We detected no difference in anti-RV stool IgA between CD and RBD mice (Fig. 3C); however, total stool IgA was decreased in RBD mice relative to CD mice (2208 ± 188 mg/ml vs. 5155 ± 425 mg/ml; P < 0.0001) ( Fig. 3F).

Please see below the corrected table “
“Furocoumarins are w

Please see below the corrected table. “
“Furocoumarins are well known natural or synthetic compounds, which derive from a linear (psoralens) or angular (angelicins) condensation of a coumarin with a furan ring. Some of them are

employed in PUVA (Psoralen + UVA) therapy for the treatment of autoimmune or hyper-proliferative skin diseases, including psoriasis and vitiligo. PUVA therapy efficacy is due to a combination of psoralen administration and UV-A irradiation. In fact, when activated by UV-A light, furocoumarins induce many biological effects, such as photocycloadditions to DNA, immune system modulation, reactions with proteins, RNA and lipids [1]. Thanks to selleckchem the development of the photopheresis, the PUVA therapy has amplified its application to some specific tumor forms such as cutaneous T-cell lymphoma [2]. Although the first furocoumarin was introduced in clinical practice as early as 1974 [3], these molecules

still draw the attention of the scientific community. In fact, many new potential therapeutic applications for furocoumarins are found. For instance, some psoralen derivatives, such as 8-methoxypsoralen, Quizartinib showed anticonvulsant properties [4]; 4,6,4′-trimethylangelicin demonstrated to be potentially useful in the treatment of cystic fibrosis thanks to its anti-inflammatory activity and its potentiating action on the CFTR membrane channel whose dysfunction causes that disease [5]. Moreover, furocoumarins were found to induce various processes of differentiation. Psoralen is able to stimulate osteoblast

differentiation without irradiation as demonstrated by Tang et al. [6], while with or without light activation, many furocoumarins induce erythroid differentiation in different cellular models [7], [8] and [9]. This latter property can be useful for the treatment of hematologic diseases, such as β-thalassemia: at present, an important therapeutic strategy is the administration of fetal hemoglobin (Hb) inducers to reduce clinical symptoms and blood transfusion requirement [10]. The aim of our study was to evaluate the activity of six linear and five angular furocoumarins on the induction of erythroid differentiation expression of globin Terminal deoxynucleotidyl transferase genes in the human leukemia cell line K562. These molecules were not fully checked for their potential erythro-differentiation so far. The K562 cell line, isolated from a patient with chronic myelogenous leukemia in blast crisis, is often used as in vitro experimental system for the first screening of new fetal Hb inducers [11]. The K562 cell line presents a low amount of Hb-synthesizing cells under standard cell-growth conditions. After the treatment with suitable inducing compounds, massive erythroid induction occurs, with a clear increase in the expression of human α and γ globin genes and a cytoplasmic accumulation of Hb Portland (ζ2γ2) and Hb Gower 1 (ζ2ε2) [10], [12] and [13].

Such instability may manifest itself in terms of genomic

Such instability may manifest itself in terms of genomic IOX1 manufacturer activity that is no longer responsive to environmental influences or lead to genomic activity that is increased as a result of chronic stress, as in accelerated aging (Hunter et al., 2013 and Hunter et al., 2012). Loss of reversal of stress induced structural plasticity, as seen in aging rats (Bloss et al., 2010) is one example; and increased expression of inflammatory mediators together with loss of cholinergic and dopaminergic function (Bloss et al., 2008) is another. In contrast, there are examples of epigenetic activation of neural activity. Indeed, acute swim

stress as well as novelty exposure induce an activational histone mark in dentate gyrus, namely, acetylation of lysine residue 14 and phosphorylation of the serine residue on histone H3, which is dependent

on both GR and NMDA activation and is associated with c-fos Selleck CH5424802 induction among other genes (Reul and Chandramohan, 2007). Acetylation of another lysine residue, K27 on histone H3, is associated with increased expression of metabotropic glutamate receptor, mGlu2, in hippocampus of Flinders Sensitive Line (FSL) rats as shown by chromatin immunoprecipitation (Nasca et al., 2013). mGlu2 is known to exert an inhibitory tone on glutamate release from synapses. The acetylating agent l-acetylcarnitine (LAC), a naturally occurring substance, behaves as an antidepressant, at least in part by the epigenetic up-regulation of mGlu2 receptors via this epigenetic mechanism. LAC caused a rapid and long-lasting

antidepressant effect in both FSL rats and in mice exposed to chronic unpredictable stress, which, respectively, model genetic and environmentally induced depression. Beyond the epigenetic action on the acetylated H3K27 bound to the Grm2 promoter, LAC also increased acetylation of NF-ĸB-p65 subunit, thereby enhancing the transcription of Grm2 gene encoding for the mGlu2 receptor in hippocampus and prefrontal cortex. The involvement of NF-ĸB in LAC antidepressant-like effects supports a growing literature that shows depression may be associated with a chronic inflammatory response (Dantzer et al., 2008). Importantly, LAC reduced the immobility time in the forced swim test and increased sucrose preference those as early as 3 d of treatment, whereas 14 d of treatment were needed for the antidepressant effect of chlorimipramine (Nasca et al., 2013). This suggests LAC is important for stress resilience. A recent study from our laboratory has shown that hippocampal expression of mGlu2, is also a marker of individual susceptibility to mood disorders. Interestingly, mGlu2 is the same receptor regulating inhibitory glutamate tone that has been shown to be elevated by treatment with LAC in FSL rats to reverse depressive-like behavior (Nasca et al., 2013).

TRB: Receives research support from the USPHS/NIH/National

TRB: Receives research support from the USPHS/NIH/National AZD2281 molecular weight Cancer Institute. MAS: Is a consultant for SPMSD, Merck and GSK “
“This article provides a broad overview of clinical trial results for the two licensed prophylactic human papillomavirus (HPV) vaccines, Cervarix® (GlaxoSmithKline Biologicals, Rixensart, Belgium) and Gardasil® (Merck & Co., Whitehouse Station, NJ USA), concentrating on studies published since 2008. It emphasizes the end of study analyses of the pivotal phase III trials

in young women that have led to widespread licensure and subsequent uptake of the vaccines. A review of earlier publications on the subject can be found in a previous monograph in this series [1]. The results of efficacy studies in mid-adult

women and men that, in some instances, Ibrutinib nmr have led to additional indications for the vaccines, are also presented. In addition, safety/immunogenicity studies involving alternative dosing schedules, other populations, or combined administration with other licensed vaccines are outlined. Finally, potential second generation vaccines are briefly discussed. A companion article in this monograph is devoted to the implementation issues related to the introduction of these vaccines (Markowitz LE et al., Vaccine, this issue [2]). Both Cervarix® and Gardasil® are non-infectious subunit vaccines composed primarily of virus-like particles (VLPs). The VLPs spontaneously self-assemble from 360 copies of L1, the major structural protein of the virion [3]. Although referred to as “virus-like”, the VLPs are completely non-infectious and non-oncogenic, since they do not contain the viral DNA genome or specific viral genes required for these activities. VLP vaccines are based on the concept of forming a structure that sufficiently resembles the outer shell of an authentic HPV virion such that antibodies that are induced to it react with and inactivate the authentic virus [4]. The specifics of how these antibodies are induced, how they reach the site of HPV infection, and how

they prevent HPV infection, are the subject of an accompanying article in this monograph (Stanley M et al., Vaccine, this issue [5]). Dichloromethane dehalogenase Although conceptually similar, Cervarix® and Gardasil® differ in several aspects, including valency, dose, production system, and adjuvant (Table 1). Cervarix® is a bivalent vaccine, containing the VLPs of HPV16 and 18, the two types that cause 70% of cervical cancer worldwide, and even greater proportions of HPV-associated vulvar, vaginal, penile, anal, and oropharyngeal cancers [6] and [7] (see Forman D et al., Vaccine, this issue for details on type-specific HPV disease burden [8]). Gardasil® targets the same two cancer-causing types, but in addition contains VLPs of HPV6 and 11, which cause approximately 90% of external genital warts in both men and women [9].

6%) in 903 children and was the primary trigger for screening for

6%) in 903 children and was the primary trigger for screening for intussusception. Other presenting features of possible, ultrasound-diagnosed and Brighton Level 1 intussusception are presented in Table 1. Investigators reported twenty-five events of intussusception including 23 identified through surveillance criteria in the protocol and two that were a result of a clinical decision to perform an ultrasound examination – one for irritability and excessive crying and the other for a child who had vomiting and abdominal distension that did

not meet the screening criteria. The intussusception case adjudication committee reviewed INCB024360 nmr reports and ultrasound images of 25 events of intussusception reported by site investigators. The ultrasound images for two children with self-limiting illness were of poor quality where intussusception

could not be independently confirmed. The committee adjudicated that 23 events were intussusceptions diagnosed by ultrasound examination. FRAX597 chemical structure These included 14 male and nine female children. The median age at event for all ultrasound-diagnosed intussusception was 399 days (IQR, 247, 608). The median interval between the last dose of vaccine and the event was 280 days (IQR 137, 460). None of the intussusceptions were reported in the seven, 14, 21 or 28-day period following any vaccination. The earliest case following immunization identified in the trial occurred in a placebo recipient, 36 days after the third dose. Among those vaccinated with Rotavac, the earliest case occurred 112 days after the third vaccination. Fourteen intussusceptions (61%) occurred between seven and 19 months of age (Fig. 2) and we did not observe evidence of seasonality. The incidence

of ultrasound-diagnosed intussusception was 200/100,000 child-years (95% CI, 120, 320) in the vaccine arm and 141/100,000 child-years (95% CI, 50, 310) among those receiving placebo. The incidence of intussusception varied across geographic locations others in India with an incidence of 581 per 100,000 child-years (95% CI 332, 943) at Vellore, 178 per 100,000 child-years (95% CI, 58, 415) at Pune and 27.7 per 100,000 child-years (95% CI, 3, 100) at Delhi. Twelve (52.2%) of the ultrasound-diagnosed intussusceptions were transient and did not require medical intervention suggesting an increased likelihood of picking up transient and otherwise self-limiting small bowel intussusception of doubtful consequence. Eight events in the vaccine arm and three events in the placebo arm had intussusception confirmed at level 1 diagnostic certainty by Brighton Collaboration Intussusception Working Group criteria [14]. All 11 confirmed cases of intussusception presented with evidence of intestinal ischemia manifested as passage of blood in stool; eight in vaccine and three in placebo groups; two cases of a mass palpable per abdomen on examination; both in the vaccine group.