, 2010) In this study, the risk of on-road crashes was higher in

, 2010). In this study, the risk of on-road crashes was higher in older age groups and the risk of collisions appeared

to be higher in younger cyclists and males. There was a lower risk of all crashes in overweight or obese cyclists. In this study, commuting with a bicycle did not predict an increased risk of on-road crashes, in accordance with previous Australian research (Heesch et al., 2011). It is noteworthy because bicycle commuting, as a means to engage in regular physical activity, is more likely to be adopted and sustained compared with traditional exercise programmes (Hillsdon et al., 1995) but is deterred by safety concerns for many people (Mackie, 2009 and van Bekkum et al., 2011). While many cyclists feel safer in a group than alone (O’Connor and Brown, 2010), our findings showed that participants who ever rode in a bunch had a higher crash risk. The data did not allow us to determine if the crashes occurred

while GSK2656157 purchase riding in a bunch. Consequently, it was not possible to distinguish risk factors associated with cycling in a peloton (such as high speeds or reduced warning of road hazards) from characteristics of bunch riders, who tend to be more experienced and, possibly, take greater risks in traffic (Johnson et al., 2009). This is an area for future research. This study revealed that cyclists with a bicycle crash history were more likely to experience crash episodes during BVD-523 datasheet follow-up. This does not fit the findings 17-DMAG (Alvespimycin) HCl from a US study (Hoffman et al., 2010) but is consistent with “accident proneness” which assumes that injuries tend to cluster within persons. This concept was introduced decades ago (Farmer and Chambers, 1926 and Greenwood and Woods, 1919) and confirmed in a meta-analysis (Visser et al., 2007) but was challenged

by a recent study (Hamilton et al., 2011). A broader term “accident liability” emphasises the role of multiple factors in injury causation (Farmer and Chambers, 1926 and Kuné, 1985). These are beyond the scope of this analysis but are worthy of further evaluation. While conspicuity aids are effective in improving detection and recognition time by drivers (Kwan and Mapstone, 2009), the effect of such measures on cyclist safety is not yet conclusive. In this analysis, using lights reduced the risk of on-road crashes but the effectiveness of other conspicuity aids was not clear as in a US cohort study (Hoffman et al., 2010). The protective effect of fluorescent colours found in our previous analysis may be due to failure to exclude off-road crashes (Thornley et al., 2008). In any case, our study design did not allow us to account for details of the circumstances of the crash, such as weather, lighting, road and traffic conditions. Cyclists’ acute behaviour, that is, immediately prior to a crash, may be more relevant to crash risk and was examined in a case–control study (Hagel et al., 2012).

Gantrez® AN-139, a copolymer

of methylvinylether and male

Gantrez® AN-139, a copolymer

of methylvinylether and maleic anhydride (PMVE/MA), was a gift provided by Ashland (Waterfield Tadworth Selleck Proteasome inhibitor Surrey, KT20 5HQ, UK). Shandon M-1 embedding OCT (optimal cutting temperature) matrix was purchased from Thermo Electron Corporation (Beenham, Reading, UK). NPs were prepared using a modified emulsion–diffusion–evaporation method used in an earlier study where reproducibility of dye content, size, and surface charge of Rh B-loaded PLGA NPs has been demonstrated using triplicate experiments [10]. In brief, 50 mg of polymer was dissolved in 2.5 mL ethyl acetate for 2 h at ambient temperature using a magnetic stirrer (Cimarec i Poly 15 Multipoint stirrer, Thermo Electron Corporation, Beenham, Reading, UK). For the

preparation of Rh B-loaded NPs, a 200 μL aliquot of an aqueous Rh B solution of specified concentration was emulsified www.selleckchem.com/products/ulixertinib-bvd-523-vrt752271.html in the organic phase for 5 min using a high speed homogenizer (Polytron PT4000, Littau, Switzerland) to produce a w/o emulsion. An aqueous DMAB solution (5 mL) of specified concentration was added to the resulting emulsion under stirring to produce a w/o/w emulsion. This was followed by homogenization for 5 min. The resulting emulsion was diluted with 25 mL of water with constant stirring. For FITC-loaded NPs, specified weights of the dye were dissolved in the polymer solution prior to the addition of either PVA or DMAB solution of specified concentration, followed by a single homogenization step to yield an o/w emulsion. This was diluted with water (25 mL) and stirred to allow solvent evaporation. Selected formulation variables and the emulsion homogenization

speed were modulated to generate dye-loaded PLGA NPs with different physicochemical characteristics (NPs size, hydrophilicity, surface charge, dye type, and dye initial loading). NPs size was modified by controlling the emulsion homogenization speed (5000, 10,000 and 15,000 rpm), while NPs hydrophilicity was modulated using PLGA copolymer with different lactic to glycolic acid ratios (50:50, 75:25, 100:0). The type of NPs surface charge was determined Cytidine deaminase by the emulsion stabilizer used. DMAB resulted in positively charged NPs, while PVA produced negatively charged NPs. The dye loading of NPs dispersions with Rh B and FITC was increased by adjusting the initial loading (5%, 10%, and 20% w/w) during emulsification. Unless otherwise mentioned, all experiments were conducted by varying one parameter while keeping other parameters set at selected conditions. Table 1 shows the test dye-loaded NP formulations obtained by modulating formulation variables and homogenization speed. The morphology of NPs was examined by transmission electron microscopy (TEM) (LEO 912 AB Omega, Zeiss, Oberkochen, Germany). A 50 μL volume of diluted NP dispersion (1:10) was placed onto the surface of a formvar/carbon coated 300 mesh grid and allowed to settle for 30 s.

Negative QC serum: four negative

candidates were tested i

Negative QC serum: four negative

candidates were tested in different labs using different strains. These tests showed that J10 had the lowest GMT (1:4.3) and CV (7.5%). J10 was chosen as the negative EV71–NTAb QC serum (Table 3). Weakly positive QC serum: GMTs of antibodies for two weakly positive candidates, N3 and N30, were found to be 1:120.7 and 1:181.3. The CVs were found to be 7.9% and 14.2% (Table 3). The CA16 antibody GMTs of N3 and N30 were 1:55 and 1:128. N3 was chosen as the weakly positive EV71–NTAb QC serum because it showed Paclitaxel cell line the lowest CV and lowest level of CA16–NTAb. Strongly positive QC serum: Two strongly positive candidates, N12 and N25, both showed high GMTs of EV71–NTAb and low CVs (Table 3). N12 was negative for CA16–NTAb. N12 was chosen as the strongly positive EV71–NTAb QC serum. EV71–NTAb standards, QC sera, and seventeen serum samples from healthy individuals were assayed in Labs 1, 3, and 4 using the A-01 strain. NTAb titer in each sample was standardized to antibody units (U/ml) based on the neutralizing titer of the N12 standard (Table 4). CV mean values and Max–Min deviations were 19.2%

selleck inhibitor and 5.6 times before standardization. CV mean values and Max–Min deviations were 8.2% and 2.4 times after standardization. Mean values and deviations were reduced by 11.0% and 3.2 times, on average. Analysis of variance showed that there was significant difference between before and after standardization. As shown in Table 5, vaccines from three companies were standardized to equal antigen content. A 162 U/0.5 ml dose of vaccine was used to immunize each mouse in three groups of mice. Twenty-one days after the first dose, the positive NTAb rate was 76.7–83.3%. Endonuclease The NTAb was 1:33.0–1:53.6 (42.9–69.8 U/ml). No significant difference was found for the rates and titers of positive NTAb (P > 0.05), indicating that single injections in mice with standardized doses of vaccines

from different companies induced comparable NTAb responses. HFMD is a serious public health concern in the Asia-Pacific region, especially in China and Southeast Asia. An effective EV71 vaccine will be an efficient way of controlling HFMD. Vaccines in development include the following: whole-virus and inactivated vaccines, recombinant VP1 protein vaccines, VLPs, VP1 synthetic peptide vaccines, and VP1 DNA vaccines [17], [18], [19], [20], [21] and [22]. The protective effects of various types of vaccines in animals were demonstrated by the results of an inactivated whole-virus vaccine study [23]. In China, three companies have completed preclinical studies on their EV71 inactivated vaccines, all of which have been approved for clinical trials.

Two trials were categorised as blinded but the comparison of inte

Two trials were categorised as blinded but the comparison of interest (exercise vs control) was not concealed from patients, which is part of the blinding criterion (Jadad et al 1996). When this is corrected, the Jadad scale does little to discriminate the quality Anti-diabetic Compound Library of the included studies, with 13 of the 15 studies scoring 2 out of 5. A sensitivity analysis conducted with a more discriminatory tool would indicate whether the estimate of the

effect changes with study quality. Physiotherapists should advise haemodialysis patients of the benefits of exercise training and prescribe an aerobic and strengthening training regimen tailored to each patient’s fitness, strength, and comorbidities. One issue we must consider carefully when prescribing the regimen is that exercise in non-dialysis periods may improve cardiovascular outcomes more, but exercise during dialysis is associated with greater adherence (Bennett et al 2010). “
“The Dix-Hallpike Test (DHT) is considered the gold standard assessment for the diagnosis of the vestibular disorder Benign Paroxysmal

Positional Vertigo (BPPV). BPPV is described as a ‘spinning’ sensation caused by head VX-770 ic50 movement that typically lasts for 15 seconds and may be accompanied by nausea. Individuals classically describe these symptoms when turning over in bed but they may also occur when bending down or looking up (Noda et al 2011). BPPV occurs when free-floating debris enters one of the semicircular canals causing the endolymph to become gravity sensitive resulting in abnormal displacement of the cupula and consequential neural firing (Brandt & Steddin 1993). BPPV may be associated with head injuries and various inner ear problems, however in many cases Astemizole the cause is idiopathic, occurring at any age but most commonly between 50 and 70 years (Hornibrook 2011). The DHT should be used following a subjective assessment to confirm a diagnosis of BPPV. The DHT (Dix & Hallpike

1952) consists of a series of head movements conducted in order to stimulate the movement of the debris in the posterior semicircular canal which is responsible for symptoms in 90% of cases (Stavros et al 2002). The test can be carried out by any healthcare professional with knowledge of the vestibular system. The patient starts in a sitting position and their head is turned 45° towards the side to be tested. The assessor then assists them to lie down quickly and extends their neck 20° over the end of the plinth, maintaining 45° rotation. The assessor should be able to see the patient’s eyes and should observe for nystagmus. A positive response is elicited if rotational nystagmus is noted. The nystagmus will have a delayed onset of approximately 1–2 seconds following movement and it should subside after 10–20 seconds (Furman & Cass 1999). The direction of nystagmus will reverse on returning to a seated position and it will fatigue on repeated testing.

This has been done for a number of reasons Firstly, the elevated

This has been done for a number of reasons. Firstly, the elevated pAkt signalling has been implicated as a major determinant of cancer (Faratian et al., 2009b and Schoeberl et al., 2009); secondly, the level of Akt phosphorylation has been indicated NVP-BGJ398 datasheet as the

key responsive element to anti-ErbB2 inhibitors and to the changes in ErbB2 expression (Birtwistle et al., 2007 and Faratian et al., 2009b). Below we present the results of the analysis of the SpAkt global sensitivity profile in the presence and absence of ErbB2 inhibitor pertuzumab, and demonstrate what useful information can be drawn from the analysis. The SpAkt sensitivity spectrum ( Fig. 3, left column) can be interpreted in the following way: lower values of the parameters, shown at the top of the spectrum, in general correspond to a lower pAkt signal, while lower values of the parameters at the bottom of the diagram are likely to result in a higher value of SpAkt, and vice versa. Thus the parameters at both poles of the spectrum would point to the proteins whose activity, if dysregulated (via activating mutations or activity loss), could

result in elevated pAkt signalling. Therefore these proteins could serve as biomarkers of dysregulated PI3K/Akt signalling in cancer. The parameters from the upper part of the spectrum mTOR inhibitor would indicate promising drug targets, as their lower values would correspond to lower SpAkt, and therefore targeting these proteins may be beneficial with respect to suppressing pAkt. In the absence of the drug (Fig. 3) the pAkt signal had most of its sensitivity concentrated on the parameters related to the function of the PI3K/PTEN/Akt signalling branch, whereas the sensitivity to the majority of parameters of the MAPK branch was in a near zero range. Similar lack of sensitivity of the pAkt signal to the parameters of MAPK cascade has been previously reported in (Schoeberl et al., 2009). The highest sensitivity (positive correlation) of SpAkt was found for the parameters describing the size of the phosphoinositol pool (PI), the maximal rate of Akt phosphorylation by PDK1 (V40), and several

other parameters of PI3K/PTEN signalling cycle. The total amount of PTEN and PP2A, as well as several L-NAME HCl parameters related to their catalytic activity were negatively correlated with the value of the pAkt signal. Thus, our GSA procedure identified the phosphoinositol pool (PI), PDK1 and PI3K as the most promising targets to suppress SpAkt. At the same time, hyper-activation of PDK1 and/or PI3K, as well as the loss of PTEN and/or PP2A activity, were highlighted as potential biomarkers of Akt pathway dysregulation in cancer. We next sought the confirmation of these predictions in experiments and from the available literature. The direct manipulation of PI pool is not advisable for drug therapy, due to intricate involvement of multiple PI derivatives in many important physiological processes, including contraction of cardiomyocytes.

Once the disease disseminated in vaccinated mice, the inflammator

Once the disease disseminated in vaccinated mice, the inflammatory lesions in their earlobes tended to evolve slower after 6–7 weeks of infection, as compared to non-vaccinated mice ( Fig. 1). It remains to be analyzed whether dissemination increases overall Leishmania numbers that possibly induce inhibitory molecules on inflammatory cells, thereby diminishing the inflammation yet not the disease progression. These data show that vaccination

with LPG induces a more rapid dissemination of the parasites. We studied the modulation exerted by in vitro stimulation of macrophages from healthy mice with LPG (1, 5 or 10 μg) and analyzed SCH 900776 order the ligands of regulatory molecules of T cells in macrophages. Stimulation with 1 μg LPG led to an increased PD-L2 expression, yet when the challenge was augmented to 5 μg, the PD-L2 expression significantly increased (3-fold) whereas stimulation with 10 μg only slightly enhanced the expression (2-fold), which was not different from non-stimulated controls ( Fig. 2A). These results suggest that LPG is capable of regulating the interaction between T lymphocytes and macrophages by inducing PD-L2 in a dose-dependent fashion. Furthermore we MI-773 analyzed whether in vitro infection of macrophages could regulate the expression of these inhibitory molecules. Peritoneal macrophages were infected with L. mexicana promastigotes in a ratio 1:10 (cells:parasites). In one group, Leishmania

promastigotes combined with 5 μg LPG were used to infect macrophages. The cells were stained with antibodies against F4/80, PD-L1 and PD-L2. PD-L1 expression decreased slightly

in macrophages infected with Leishmania promastigotes ( Fig. 2B). In contrast, PD-L2 was up-regulated (2.4-fold) in macrophages infected with Leishmania combined with LPG, as compared to non-infected cells ( Fig. 2B). In conclusion, LPG stimulation seems to have much a more potent effect to induce PD-L2 in peritoneal macrophages, as compared to the infection with L. mexicana alone. After finding that LPG exacerbated disease progression and modulated the PD-L2 expression in macrophages, we were interested in analyzing the effect exerted by LPG on spleen CD8+ and CD4+ T lymphocytes of mice immunized with two different doses of LPG. Vaccination with 10 or 100 μg LPG increased PD-1 expression in CD8+ T cells. Re-stimulation of these cells in vitro with 1, 5 or 10 μg LPG maintained their elevated expression of PD-1 ( Fig. 3A). LPG had an opposite effect on CD137 expression in CD8+ T cells. Mice vaccinated with 10 μg down-regulated their CD 137 expression by 20%, whereas vaccination with 100 μg decreased CD137 expression by 25% (Fig. 3B). Re-stimulation with 5 or 10 μg LPG further reduced CD137 in mice vaccinated with 10 μg, as compared to non-vaccinated controls (Fig. 3B). The analysis of CD4+ T cells of mice vaccinated with 10 or 100 μg LPG showed no modification in the PD-1 expression.

Also, they were required to be able to communicate in English and

Also, they were required to be able to communicate in English and to be receiving a daily physiotherapy exercise program as part of routine inpatient management. Patients were excluded if they had a cardiovascular condition prohibiting participation in an exercise program, a systemic disease affecting muscles or joints (eg, acute arthritis), recent surgery, or acute musculoskeletal pain requiring physiotherapy intervention. Demographic and clinical information Depsipeptide datasheet collected included age, gender, and lung function. The gaming console used for the experimental

intervention was the Nintendo-WiiTMa. The intervention incorporated interval training using the EA Sports WiiActiveTMb program and involved an individualised program comprising games and activities such as boxing, running/track exercises, and dancing tailored to each participant’s preferences, impairments, and activity limitations. The control intervention consisted of moderate intensity interval training using a treadmill or cycle ergometer, depending on the participant’s preference, and again tailored to each participant’s impairments and activity limitations. For both interventions,

instructions were provided to participants to exercise at an intensity that resulted in some breathlessness but still allowed speech, aiming for a Borg scale score between 3 and 5. Each intervention was supervised by the same physiotherapist. Prior to each next exercise intervention, participants sat quietly in a chair Galunisertib for 10 minutes before recording resting measures. Each exercise intervention comprised 15 minutes of exercise, including warm up and excluding rest periods and cool down. The warm up and cool down consisted of lower intensity exercise relevant to each intervention, eg, walking

or slow pedaling and stretching. Cardiovascular demand of the two exercise interventions was measured using heart rate and oxygen saturation recorded continuously via a forehead probe with a pulse oximeterc. Participant perception of the cardiovascular demand of each exercise intervention was measured using the modified Borg dyspnoea scale (Mahler et al 2001) and Rating of Perceived Exertion scale (6 to 20) (Borg 1982) to indicate breathlessness and exercise intensity respectively. Energy expenditure during the exercise was measured using a SenseWear Pro activity monitord. The SenseWear Pro activity monitor, worn on the right upper arm, measures skin temperature, galvanic skin response, heat flux, and motion via a 2-axis accelerometer, calculating energy expenditure in metabolic equivalents (MET) during the recorded movement (Jakicic et al 2004).

S Department of Health and Human Services et al , 2012), and cur

S. Department of Health and Human Services et al., 2012), and current youth tobacco use is still prevalent; 7% of middle school students and 23% of high school students used any tobacco in 2011 (Centers for Disease learn more Control and Prevention, 2011a). The density of tobacco retailers, particularly

in neighborhoods surrounding schools, has been associated with increased youth smoking rates (Henriksen et al., 2008, Lipperman-Kreda et al., 2012, Loomis et al., 2012, McCarthy et al., 2009 and Novak et al., 2006). Frequent exposure to tobacco retail displays has also been associated with increased smoking initiation among youth (Henriksen et al., 2004, Henriksen et al., 2010 and Johns et al., 2013) and negative impact on tobacco quit attempts (Germain et al., 2010, Hoek et al., 2010 and Wakefield et al., 2008). Lack of enforcement of tobacco sales to minors laws is associated with higher levels of illegal sales to youth (American Lung Association of California and Center for Tobacco Policy and Organizing, 2007, Forster et al., 1998, Ma et al., 2001 and Rigotti et al., 1997). Results from the 2011 National Youth Tobacco Survey found Paclitaxel in vitro that among youth nationwide who were current cigarette users, 44% of middle school students and 51% of high school students reported that they were not refused purchase because of their age (Centers

for Disease Control and Prevention, 2011b). Tobacco retail policies have

demonstrated success in reducing tobacco sales to youth (American Lung Association of California and Center for Tobacco Policy and Organizing, 2007, Ma et al., 2001 and Novak et al., 2006); however, research is limited on whether implementing a tobacco retail permit policy would increase the amount of enforcement Etomidate of laws preventing sale of tobacco to minors. Enforcement of these laws in California has been limited due to lack of funding. One way to remedy this concern is through a local tobacco retail permit which earmarks a portion of the permit fee for enforcement of laws regulating the sale of tobacco. Even less is known about how tobacco retail permitting policies impact youth exposure to and availability of tobacco products through the retail setting (American Lung Association of California and Center for Tobacco Policy and Organizing, 2007, Ma et al., 2001 and Novak et al., 2006). Research on the impact of tobacco retail permit policies on reducing the overall number of stores selling tobacco in a community, including impacts on tobacco retail density and locations near schools, is even more limited. In March 2010, California’s Santa Clara County Public Health Department received funding from the U.S. Department of Health and Human Services through a Communities Putting Prevention to Work grant to support tobacco use prevention and secondhand smoke reduction efforts.

Forty-eight patients with acute bacterial rhinosinusitis particip

Forty-eight patients with acute bacterial rhinosinusitis participated in the trial; 24 were allocated to the experimental group to receive ultrasound and 24 to the control group to receive antibiotics. In the short-term, there were 3 dropouts so that 94% of data was collected and in the long-term there were 6 dropouts so that 88% of data

was collected. Figure 2 shows the flow of participants through the trial and reasons for dropping out. The baseline characteristics of the participants are presented in Table 1. The groups were similar in age, gender, smoking habits, duration of current symptoms, previous episodes of sinusitis, and previous intervention except that the experimental group had more experience with nasal irrigation than the control group. Three out of four participants (77%) reported having symptoms for more AP24534 than 7 days and 41 participants (85%) had had sinusitis previously. White blood cell counts at baseline showed an increase in granulocytes indicative of bacterial infection. One general practitioner in general practice recruited all the participants and prescribed the antibiotics for the control group.

One physiotherapist in a private physiotherapy practice delivered all ultrasound interventions (Table 1). All participants in the experimental group completed the four sessions of ultrasound. Compliance with Selleck Kinase Inhibitor Library taking the antibiotics was not formally assessed, but there were no reports of interruption. The side-effects reported by the experimental group were nausea/stomach pain (n= 1)

and headache (n = 2), and by the control group were nausea/stomach pain (n = 1), fungal infection (n = 1), headache (n = 1) and allergy (n = 1). Group data for pain and congestion in the short-term is presented in Table 2 and satisfaction, preferred future intervention, side-effects, and relapses in the long-term are presented in Table 3. By Day 4, pain and congestion had decreased markedly in both groups. Pain around the nose had decreased by 1.5 points out of 10 (95% CI 0.6 to 2.5) more in the experimental group than in the control group. There was also a trend for pain in the teeth to decrease more in the experimental group than the control group (mean difference −1.5 points out of 10, 95% CI −3.3 to no 0.3). There were no other differences in decrease in pain and congestion between the groups. By Day 21, pain and congestion had decreased to low levels in both groups. However, there were no differences in decrease in pain and congestion between the groups in any area. At one year follow-up, there were no differences between the groups in terms of satisfaction with intervention (RR 0.77, 95% CI 0.50 to 1.04), number of side-effects (RR 0.71, 95% CI 0.20 to 2.56), or number of relapses (RR 1.83, 95% CI 0.87 to 4.12). However, the experimental group were more likely to prefer ultrasound than the control group were to prefer antibiotics for a future episode (RR 2.75, 95% CI 1.19 to 7.91).

In preparation for vaccine introduction in countries of Africa an

In preparation for vaccine introduction in countries of Africa and Asia, activities should be considered to develop capacity for vaccine-pharmacovigilance, to validate the Brighton Collaboration definition for intussusception PLX3397 purchase in a variety of settings, to establish background rates of intussusception

in select areas, and to conduct case-series studies in early adopter countries (Table 1). Having at least minimal capacity for vaccine safety is an important requirement for countries to make informed decisions about the benefits and risks of vaccination in their populations. Most low- and middle-income countries do not yet have such capacity in place. WHO and partners (regulators, industry, and technical agencies) are currently developing a global vaccine safety blueprint to support countries in reaching such minimal capacity. Some essential elements of that capacity will include an effective spontaneous reporting system for adverse events following immunization (AEFI) and a national advisory body of experts that can review serious AEFI. Having a national group of experts advising the authorities on vaccine safety matters is an important element to ensure not only the quality of the work that will be done with respect to rotavirus vaccines and intussusception but, beyond rotavirus vaccines, for the safe use of all important vaccines of the national immunization programs.

However, due to the low incidence of intussusception, having spontaneous vaccine pharmacovigilance click here alone will not be sufficient and active surveillance approaches should be developed [6]. Conducting active surveillance for intussusception in resource L-NAME HCl poor countries will require three main activities to be completed. 1. Assessing the feasibility of using current Brighton Collaboration definition for intussusception in a variety of settings. Having a definition of intussusception that can be applied in many countries according to the patterns of clinical practice is critical to correctly diagnose cases of intussusception

both prior to and after vaccine introduction. While this definition has been prospectively validated in some settings [46], it has yet to be validated in Africa. Case-series studies conducted in Mexico and Brazil using the same protocol produced different results. While an increased risk of intussusception was observed following the first dose of RV1 in Mexico, a similar increased risk was not observed following the first dose in Brazil. One hypothesis to explain this difference in risk is that the take of the vaccine is lower in Brazil because of co-administration of OPV, whereas IPV is used in Mexico. To explore this hypothesis further, additional studies should be undertaken in various setting where both IPV and OPV are used to examine the interaction between rotavirus and polio vaccines.