When compared to AUCP1, AUCP2 exhibited more degree of cerebropro

When compared to AUCP1, AUCP2 exhibited more degree of cerebroprotection. Results of tissue TNF-α level are presented in Table 4 and Fig. 8. In comparison with I/R control group pyrimidines (AUCP1 and AUCP2) treatment significantly reduced the TNF-α levels and thereby contributed to its anti-inflammatory

activity. When compared to AUCP1, AUCP2 exhibited more degree of cerebroprotection. Results of tissue IL-10 levels are presented in Table 4 and Fig. 9. In comparison with I/R control group pyrimidines (AUCP1 and PD0325901 AUCP2) treatment significantly enhanced the IL-10 levels and thereby contributed to its endogenous anti-inflammatory activity. When compared to AUCP1, AUCP2 exhibited more degree of cerebroprotection. In summary, AUCP2 has offered more degree of cerebroprotection when compared to AUCP1. The probable mechanisms involved VX-770 order in the cerebroprotective activity of pyrimidines (AUCP1 and AUCP2) might be due to their antioxidant and anti-inflammatory properties. All authors

have none to declare. One of the authors (Venkata Satyanarayana Murthy Bendi) is thankful to the Principal, Andhra University College of Pharmaceutical Sciences, Visakhapatnam for providing required help in carrying out the pharmacological activities. “
“A new pharmaceutical preparation (gel) containing ketoprofen (Fig. 1) as an active compound with anti-inflammatory and analgesic activity was developed for treatment of diseases Rutecarpine of the muscolo-skeletal apparatus, in which a local action is preferred. In order to prevent bacterial

growth during the storage of the formulation,1 and 2 two commonly used preservatives—a mixture of the methyl ester and propyl ester of p-hydroxybenzoic acid Methyl Paraben (MP) ( Fig. 2) and Propyl Paraben (PP) ( Fig. 3)—have been used gas chromatography–mass spectrometry (GC–MS), 3 capillary electro chromatography, 4 and 5 high-performance liquid chromatography (HPLC) 6, 7 and 8, HPLC–MS 9 and 10 or micellar chromatography 11 as well. Only one HPLC method has been found in literature 12 for simultaneous determination of KP and its degradation products, but not in the presence of preservatives. Recently, preservatives in pharmaceuticals have to be quantified. HPLC analysis of MP and PP is frequently described in the literature 13, 14 and 15; another publication deals with simultaneous quantification of Ketoprofen and Parabens in a commercial gel formulation by RP–HPLC with UV detection, 16 but there is no any HPTLC method describing simultaneous determination of all three components—ketoprofen, MP and PP—in pharmaceutical preparations with no any HPTLC method describing simultaneous determination in this mobile phase with beneficial system suitability parameter. For such a formulation, a novel method capable to analyze simultaneously the active component ketoprofen, and its two preservatives Methyl Paraben and Propyl Paraben was developed.

The high burden of severe rotavirus disease in the second year of

The high burden of severe rotavirus disease in the second year of life documented in the current study emphasises the importance of continued protection, and the potential public health value

that even a modestly efficacious vaccine would bring if incorporated into Malawi’s national immunisation programme. Vaccine efficacy in Malawi was substantially lower than observed in clinical trials of both Rotarix and RotaTeq in upper and middle income countries, where an efficacy of 85–100% against severe rotavirus gastroenteritis had been demonstrated in the first year of life [6], [7] and [8], CAL-101 supplier and where protection is relatively well conserved into the second year of life [29], [30], [31] and [32]. Potential reasons (e.g. maternal antibodies, breastfeeding, concurrent OPV administration, malnutrition, concomitant HIV infection, rotavirus strain diversity, enteric co-infections, “force of

infection”) why the efficacy of live, oral rotavirus vaccines may be lower in developing countries have been discussed previously, but remain incompletely understood [33], [34] and [35]. In our study, all mothers were breastfeeding, and >99% of infants received concomitant OPV [14]. Less than 5% of enrolled infants were HIV infected [14]. The impact of nutritional status Regorafenib molecular weight on vaccine efficacy and the role of concurrent infection with other enteric pathogens in this study cohort is currently crotamiton being explored. Although there is no reliable, consistent laboratory correlate that predicts clinical protection following rotavirus vaccination [36] and [37], it is known that the serum immune response to rotavirus vaccines decreases by income level of country [33]. The anti-rotavirus IgA seroconversion rate following vaccination in this study, 52.9%, is one of the lowest reported for Rotarix [33]. In this regard, it is worthy of mention that Malawi is a very low income country (Gross National Income per capita of $810 per annum) with an under 5 mortality rate of 100 per 1000 live births (http://www.who.int/gho/countries/mwi.pdf). A particular feature of this study

was the diversity of circulating strains encountered, including genotypes G8, G9 and G12, with only a minority of strains carrying the G1P[8] genotype on which the vaccine is based. Surveillance of rotavirus strains undertaken in Malawi since 1997 has described an extraordinary diversity of rotaviruses [22], and African countries are known to harbour a wide variety of rotavirus strains [38]. The diversity of circulating strains documented during this study, when examined further at the whole genomic level, does not however explain the reduced vaccine efficacy in Malawi [39]. Furthermore, vaccine efficacy was consistent across strain types in both Malawian and South African populations [14] and [40].

Children whose parents were unable to give consent were also excl

Children whose parents were unable to give consent were also excluded. After receiving written informed consent, the following information was gathered from the parent/guardian using questionnaire: subject’s demographics including medical history, socio-economic details (e.g. annual family income, area of residence), and family details (e.g. number of members in family, number of siblings); information about

direct costs (e.g. OPD, medicines, extra drinking fluids, expenses on conveyance for visit), and impact caused selleck kinase inhibitor by RVGE (e.g. monetary impact of lost days of work for parent/guardian and parental stress). The monetary impact of lost days of work was calculated based on daily wages of the parent/guardian. The stress suffered by the parent/guardian due to child’s disease was scored on a scale of 0–10, where learn more ‘0’ was no stress and ‘10’ was extreme stress. At enrollment, following detailed clinical data were recorded using questionnaire: date of onset of symptoms (diarrhea, vomiting, and fever), number of days for which each symptom continued, maximum frequency of stools and vomiting episodes per day, maximum temperature recorded, dehydration status, behavioral signs and symptoms, and treatment given to the subject. The severity of dehydration of the subject was assessed as mild, moderate, or severe by the investigator based

on patient examination for restlessness, lethargy,

aminophylline sunken eyes, skin pinch, normal or poor feeding. The number of IV rehydration bottles administered to the subject was also recorded. Occurrences of behavioral signs and symptoms such as irritable/less playful, lethargic/listless, and convulsions were also recorded. The parent/guardian was given a diary card and questionnaires to record follow-up information on daily symptoms of the subject, and costs and impact caused due to the disease. The questionnaire used on the day of enrollment and follow-up questionnaires used to collect information after OPD visit or Day 1 were designed specifically for this study, and contained simple and easily understandable questions in local vernacular language. The parent/guardian was trained to fill the diary card and questionnaires. Study personnel made two telephonic contacts with the parent/guardian, first after Day 7 and second after Day 14, for collecting follow-up information for Day 1–Day 7 and Day 8–Day 14, respectively. Additional information such as healthcare utilization (e.g. repeat OPD visit/s, hospitalization, intravenous [IV] hydration) and impact of disease and its progress during Day 1–Day 7 and Day 8–Day 14 was also collected telephonically. The severity of AGE was scored by the physician based on physical examination of child and the information collected for the duration and severity of disease symptoms.

S1b) Molecular analysis of the transgenes expressed in 293T cell

S1b). Molecular analysis of the transgenes expressed in 293T cells stably transduced with IC-LVs was done by Western blot analyses of cell lysates and cell supernatants. Intracellular GM-CSF protein was detectable in LV-G2α and LV-G24 transduced cells as a smear ranging from 15–25 kDa, whereas the secreted form was detected at 25 kDa (Fig. S1c). GM-CSF is synthesized in human cells as a precursor of 144 amino acids (15 kDa) with two glycosylation sites. Different molecular weight forms of GM-CSF thus result from varying degrees of glycosylation.

In addition, the additional 21 aminoacids originating from the 2A element resulted in an increment of 23 kDa. Similarly, IFN-α (IFN-α 2b) and IL-4, also known to be glycosylated in human cells, were both detectable as cytoplasmic and secreted proteins, running at higher molecular weights than AG14699 the recombinant bacteria protein (Fig. S1d and e). In previous work, we had shown that transduction of human monocytes with the bicistronic vector IC-LV-G24 readily induced outgrowth of SmartDCs. SmartDCs co-expressing HCMV pp65 protein as a model antigen potently stimulated autologous CD8+ T cells in vitro and accelerated the expansion of ABT-199 order antigen specific immune responses in vivo [10]. In this current study, we evaluated whether ID-LVs could transduce monocytes and, upon DC differentiation, the transgene expression would persist in order

to maintain the phenotype of the transduced cells. ID-LV expressing GFP used to transduce monocytes resulted into approximately 10% transduction efficiency and, upon culture with recombinant GM-CSF and IL-4, the differentiated DCs continued to express GFP for 2 weeks ( Fig. S2). Thus, our results using monocytes

basically confirmed previous findings observed for transduced DCs transduced with ID-LV [20]. Here, we also compared the effects of different cytokine combinations (GM-CSF/IL-4 versus GM-CSF/IFN-α) provided as transgenes in LVs in the induction of DCs. Monocyte-derived DCs maintained in the presence of recombinant cytokines (heretofore Conv-IFN-α-DC or Conv-IL-4-DC) or transduced with the two types of IC-LVs (LV-G24 or LV-G2α) resulted in the differentiation of cells with similar DC immunophenotypes ( Fig. S3). Thus, we proceeded toward evaluation of safety-enhanced Dipeptidyl peptidase ID-LVs in their capacity to induce DCs as well. ID-LV-induced DCs were produced essentially as previously described [10] and [26]. Shortly, CD14+ monocytes were isolated from cryopreserved PBMC from 3 different healthy donors and pre-conditioned with recombinant GM-CSF and IL-4 cytokines for 8 h prior to lentiviral addition, a critical step for efficient monocyte transduction. Bicistronic ID-LVs were used to transduce monocytes at an estimated M.O.I. of 5. After transduction, the cytokines and virus were washed-off from the culture, and the cells were maintained in the absence of exogenous cytokines in vitro.

Palivizumab was given at a dose of 0 62, 1 25, 2 5 or 5 0 mg/kg o

Palivizumab was given at a dose of 0.62, 1.25, 2.5 or 5.0 mg/kg one day prior to challenge. RSV F nanoparticle vaccine and palivizumab induced serum anti-RSV F IgG titers that were high and dose dependent (GMT = 12,998–310,439, GMTs = 4626–95,441, respectively; Fig. 4A). Similarly the levels of PCA were robust for all groups that received the adjuvanted RSV F vaccine. PCA titers in animals passively transferred with palivizumab were significantly lower and only observed at the 5 and 2.5 mg/kg doses (30, 16 μg/ml).

Cotton rats receiving 0.625 and 1.25 mg/kg palivizumab had PCA titers below the level of detection MK2206 (10 μg/ml) (Fig. 4B). Neutralizing antibodies to RSV-A and RSV-B were induced in a dose-dependent manner (Fig. 4C). Even the lowest dose of 0.003 μg RSV F vaccine induced significant levels of neutralizing antibody against both RSV-A Long and RSV-B 18537. Neutralizing titers in the 5.0 mg/kg palivizumab group were comparable to those induced in animals actively immunized with the lowest dose of 0.003 μg RSV F vaccine

(Fig. 4C and D). The in vivo protective efficacy of the RSV F nanoparticle vaccine was evaluated in direct comparison to palivizumab by measuring inhibition of viral replication in the lungs and nasal passages of cotton rats challenged with RSV-B 18537. Post-challenge lung virus titers (GMT) were just above the LOD in animals given the lowest dose of RSV F (0.003 μg) and were below the LOD in recipients of higher doses of RSV F vaccine ( Fig. 5A). The RSV lung virus titer was 4.5 log10 in the placebo group ( Fig. 5A). Palivizumab also reduced lung RSV titers to below the LOD, with others more KU-55933 purchase detectable virus in the lowest doses consistent to what has been

previously observed [34]. Reduction of RSV titers in the nasal passages was also observed in a dose dependent manner for both the RSV F vaccine and palivizumab, with relatively lower virus levels in the RSV F vaccine group in concert with the levels of neutralizing titers induced ( Fig. 5B). Thus, the RSV F vaccine was protective against non-homologous virus challenge in the upper and lower respiratory tract and appears to be a potent immunogen that provided protection via active immunization exceeding that seen with palivizumab, despite the use of very low doses of vaccine. A passive immunization-virus challenge study was done to compare the relative potency of the vaccine, as measured by the PCA assay, relative to palivizumab. Cotton rats received IM injections of a pooled cotton rat anti-RSV F serum that delivered PCA doses of 5.6, 1.6 or 0.6 mg/kg or a similar range of palivizumab at 5.0, 1.3 or 0.6 mg/kg one day prior to RSV challenge. At 24 h after administration of anti-RSV F antibodies, the levels of RSV F IgG antibodies were high and dose dependent for all the groups with the exception of the group that received normal cotton rat serum (Fig. 6C).

Terbium-based multiple label constructs displayed a significant d

Terbium-based multiple label constructs displayed a significant decrease of light emission comparing to the sum of equivalent number of non-attached probes, which was most likely due to the interaction of the chelate Selleck Crizotinib with the protein surface. Another factor of reducing the light emission could be contact quenching resulting from the approximation of the neighboring

antennae-fluorophores at high labeling density. Luminescent quenching can be suppressed by the presence of a biphenyl spacer. Generally, the rigid biphenyl group can restrict the fluorophore contacts with the protein, and also prevent the contact quenching by interfering with stacking interactions of the antennae. We obtained avidin conjugates carrying multiple lanthanide chelated with detection limit in 1–10 fM range as estimated by the detection sensitivity of single non-attached probes used for labeling. These conjugates OSI-906 cost can find wide application in biological, biophysical and biomedical studies. They can be especially useful for imaging of single molecules, biological micro objects, and body tissues as well as the development of highly

sensitive assays in which the signal cannot be amplified (e.g. using PCR amplification technique). This study was supported by NIH Grant RO1 GM-307-17-21 to AM and NIH Grant RO1 MN-079197 for SM and MB. “
“The authors regret that the following error has occurred in Section 2.3.2.2 in the above article on page 521. In Section 2.3.2.2, second paragraph, the first sentence should have

read “The released folic acid was determined…” instead of “The released DOX was determined…”. Please see below the corrected sentence. The released folic acid was determined by using UV1800 UV–vis Spectrophotometer at 283 nm. Results of triplicate tests data were used to calculate accumulated drug release. “
“The major mechanism which removes cyanide (CN) from the body is its biotransformation to the less toxic thiocyanate (SCN) in the presence of a sulfur donor (SD) and a sulfurtransferase enzyme such as rhodanese (Rh) (Way, 1983). The SD component of the present therapy of Nithiodote™, the inorganic sodium thiosulfate (TS), has limitations due to its high Rh dependency, relative low SCN formation efficacy, and low cell penetration Tolmetin ability to reach the endogenous Rh localization. The antidotal approach of co-administering TS with purified Rh encapsulated within various enzyme carriers such as erythrocytes (Way et al., 1985), and polymeric nano-delivery systems (Petrikovics et al., 2010) made the SD and Rh available in the blood stream to react immediately with the absorbed CN before it reaches its target points in the body. This way, the two components of the CN antidotal systems: (a) an appropriate SD and (b) Rh enzyme, protected from adverse immunologic reactions by macrophages, are readily available in the circulation.

Caregivers

Caregivers SB203580 of

two cases complained of abdominal distension in the child though neither of them had objective evidence of distension defined as an increase in abdominal girth by more than two cm in four hours. The median age at event for confirmed intussusception was 250 days (IQR, 232, 504) and the duration of hospitalization three days (IQR, 2,3) (Fig. 2). Six of the confirmed intussusceptions were reduced pneumatically and five by barium reduction. None of the events required surgical intervention and none were fatal. One subject had rotavirus (G1P [8]) detected in the stool sample. The sensitivity and specificity of screening criteria employed in this study (Table 2) suggest that screening for blood in stools alone would detect 69.6% of the confirmed cases while a screening Raf inhibitor criteria

of ≥3 episodes of vomiting in an hour had a specificity of 89%. The incidence rate of confirmed intussusception among vaccine recipients was 94/100,000 child-years (95% CI, 41, 185) and 71/100,000 child-years (95% CI, 15, 206) among those receiving placebo. Although there was no temporal association with vaccination, even in the 2-year follow up, the difference between the treatment arms was not statistically significant with an odds ratio 1.34 (95% CI, 0.32, 7.82) (p = 0.76). The phase III trial of the 116E vaccine was the first to use very broad screening criteria and an intense and active surveillance for intussusception. Although the study was not powered to detect an increased risk of intussusception of the magnitude noted with other currently marketed rotavirus vaccines, the active follow-up strategy resulted in the identification of 23 cases of ultrasound diagnosed intussusception in 6799 participants. In the REST trial with Rotateq, 27 cases of intussusception were observed in one year of follow up of 68,038 participants [6]. In the multi-country pre-licensure study of Rotarix vaccine, a median 100 day follow up

after dose 1 resulted in the identification of 25 cases of intussusception in 63,225 subjects [5]. An African trial identified no cases of intussusception in 5468 subjects who participated in Rotateq trials [15] with a median follow up of 527 days starting 14 days after the third dose. Rotateq trials in Asia identified one case STK38 on ultrasonography among 2036 infants followed up [16]. One case of intussusception was identified in 4939 infants followed to one year of age in Rotarix trials in Africa [17]. These data indicate that study protocols for screening and follow up impact the ability of investigative teams to identify cases of intussusception. In the 116E trial, we considered identifying all possible cases of intussusception in this community based placebo-controlled clinical trial an ethical priority. The study employed very broad screening criteria to identify potential cases early and evaluated them using standard diagnostic tools. For instance, 13.

4, 5 and 6

4, 5 and 6 selleckchem Recently, a number of studies have been done on isolation and characterization of phytochemicals, as well as on several pharmacological properties of H. antidysenterica based on experimental trials on animals. A recent study reported significant recovery in diabetic rats when they were orally administered with doses of 300 mg/kg and 600 mg/kg of

ethanolic extract of seeds. Each week of treatment showed significant decrease in levels of blood glucose, serum cholesterol, triglyceride, aspartate transaminase, alanine transaminase, alkaline transferase, urea, creatinine and uric acid while the weight of the rats increased substantially.7 Methanolic seed extracts have also shown similar results in streptozotocin-induced

rats.8 Inhibition of α-glucosidase was observed in normoglycemic rats when administered with hydro-methanolic seed extract of H. antidysenterica. This enzyme helps in absorption of glucose from intestines and therefore, can play a major role in regulating postprandial diabetes. 9 In another study, no metabolic toxicity of the hydro-methanolic seed extract was reported by glutamate oxaloacetate transaminase (GOT) and glutamate pyruvate transaminase (GPT) activities FK228 cost in the liver and kidneys. 10 Ethanolic seed extracts of H. antidysenterica in castor oil-induced diarrhoea in rats in vivo have shown a significant increase in the dry weight of their faeces and reduction in defecation drops. Aqueous and alcoholic bark extracts are also known to

act against enteroinvasive below E. coli (EIEC), Shigella flexneri, Shigella boydii and Salmonella enteritidis. 2 Aqueous and methanolic leaf extracts of H. antidysenterica were found to inhibit the growth of diarrhoeal pathogens Salmonella typhimurium, Vibrio cholerae, Vibrio alginolyticus, Vibrio cholera 0139, E. coli 0157:H7 and Salmonella typhi. 11 Methanolic bark extract of H. antidysenterica demonstrated decreased nitric oxide and malondialdehyde levels and increased levels of superoxide dismutase and glutathione levels in 2,4-Dinitrobenzene sulfonic acid induced colitis in male albino wistar rats. The rats also resisted rupture of goblet cells, inflammation in mucosal layers and inflammatory cellular infiltration. 12 Furthermore, methanolic leaf extracts demonstrated inhibition of rat paw oedema in carrageenan-induced paw oedema in Swiss albino mice. 13 H. antidysenterica has been mentioned in Ayurveda to have analgesic effects. Methanol bark extract on Swiss albino mice and wistar rats showed analgesic effects. 14 It has been established that the application of free radical scavenging compounds have healing effect and property of protecting tissue from oxidative damage. Recently in a study that investigated antioxidant property of H. antidysenterica, methanolic leaf extracts were found to scavenge superoxide ions and hydroxyl ions as well as reduced capability of converting Fe3+ → Fe2+.

All predictors except spasticity were treated as continuous

All predictors except spasticity were treated as continuous

variables in the logistic regression (Royston et al 2009). The predictors were entered in the initial model for multivariate analysis. Initially we used a bootstrap variable selection procedure that retained those variables selected with backwards stepwise regression (p to remove = 0.2) in at least 80% of bootstrap samples. Regression coefficients were zerocorrected to reduce bias ( Austin 2008). However, two of the three bootstrap models obtained in this way had poor calibration (Hosmer-Lemeshow p < 0.05). We therefore used, instead, a conventional backwards stepwise regression variable selection procedure (p to remove = 0.05) to develop our final models. Discrimination (how well the PD-1/PD-L1 inhibitor 2 model can identify patients with and without outcomes) was quantified with

area under the receiver-operating curves (AUC). Calibration (how well observed probabilities agree with predicted probabilities) was evaluated by inspecting the slope of the observed-predicted graphs and with the Hosmer-Lemeshow statistic ( Royston et al 2009). All analyses were conducted using Stata 11.1. The flow of participants through the study is shown in Figure 1. Baseline measures were obtained at a median of 6 days (IQR 3 to 11) after stroke. Final outcome Enzalutamide purchase measures were measured at a median of 6.1 months (IQR 5.9 to 6.4) after stroke. Patients who were able to ambulate independently (n = 59), or move a cup (n = 135), or feed themselves (n = 131) with the hemiplegic arm at

baseline were excluded from subsequent analyses of recovery in these abilities, respectively. Twenty of the remaining participants died, four declined re-assessment, and three could not be contacted (Figure 1). Consequently the overall rate of follow up was 81% for ambulation, 78% for moving a cup, and 81% for feeding. In participants who survived, the rate of follow up was 94% for ambulation, ADP ribosylation factor 94% for moving a cup, and 97% for feeding. Characteristics of patients are shown in Table 1. Of the 114 stroke survivors who were unable to ambulate initially, 80 (70%, 95% CI 62 to 79) were able to do so at six months. Of the 51 stroke survivors who were unable to move a cup across the table initially, 21 (41%, 95% CI 27 to 55) were able to do so at six months. Of the 56 stroke survivors who were unable to feed themselves with a spoonful of liquid initially, 25 (45%, 95% CI 31 to 58) were able to do so at six months. Results of univariate analyses are shown in Table 2. Odds ratios are associated with a one-unit increase in the predictor. Both severity of stroke and motor function (standing up ability and combined motor function of arm) were significantly associated with recovery of ambulation and feeding oneself. A one-unit increase in the NIHSS was associated with a 15% reduction in odds of recovering ambulation. A one-unit increase in Item 4 of MAS was associated with a 2.

Such protocols can be adapted to consider developing epidemiologi

Such protocols can be adapted to consider developing epidemiological information and in consultation with advisory groups, thus limiting some of the crucial decision-making needed in the midst of an emergency. Vaccine procurement and access in the Americas was differential and not equitable. The first LAC countries to have access to pandemic vaccine were those with pre-existing agreements with manufacturers. Regional or sub-regional efforts should be undertaken to enhance and extend current transfer of technology agreements for vaccine production

in LAC. PAHO’s RF played a key role in providing countries and territories, especially small ones, FK228 access to the vaccine. The vaccine donation coordinated through WHO was an international diplomatic effort aiming to provide vaccine Vemurafenib purchase to those countries with less economic resources. Unfortunately, the donation process proved to be lengthy, resulting in recipient countries being the last to receive vaccine in LAC. Efforts to streamline future donation processes are necessary to ensure the timeliness and equity of such endeavors. Many LAC countries successfully implemented pandemic vaccination

campaigns, making use of the current infrastructure of the national immunization programs. They reached, on average, 99% of their pre-defined high risk target populations. However, countries had to face multiple technical and logistical challenges, including multiple vaccine presentations, vaccine with and without adjuvant, multiple vaccine shipments due to ongoing production, and non-traditional target groups. Clear guidelines and training workshops conducted prior to vaccine arrival were critical for capacity building of health-care workers to help them manage said challenges. Pregnant

women had the lowest pandemic influenza (H1N1) vaccine coverage. In some countries health care professionals were reluctant to recommend the vaccine. This issue highlights the need to enhance health-care worker training, increase the participation of scientific societies of obstetricians and gynecologists, and strengthen social communication regarding the benefits of influenza vaccination for pregnant these women. These lessons can also be applied to annual seasonal influenza vaccination. Given the magnitude of vaccination activities in LAC and the commitment of countries to such an effort, it is important to assess the impact of this investment in the reduction of influenza disease burden. Estimations of the impact of vaccination are underway in selected countries and have presented a series of challenges, including the absence of serosurveys conducted prior to vaccine introduction, and a lack of surveillance data stratified by vaccine target groups.