Stroke Recurrence Rate and Risk Factors Among Stroke Survivors in Sub-Saharan Africa: A Systematic Review.

Purpose: Evidence supporting secondary stroke in sub-Saharan Africa is scarce. This study describes the incidence of stroke recurrence and associated risk factors in sub-Saharan Africa. Methods and Materials: Scientific databases were systematically searched from January 2000 to December 2022 for population-based observational studies, case-control or cohort studies of recurrent stroke involving adults aged 18 years and above in sub-Saharan Africa (SSA). We assessed the quality of the eligible studies using the Critical Appraisal Skills Program (CASP) checklist for observational studies. Results: Six studies met the inclusion criteria and were included in this study. Stroke recurrence rates in SSA ranged from 9.4% to 25%. Majority of the studies were conducted from Western Africa and showed that stroke recurrence rates are high within sub-Saharan Africa ranging from 2% to 25%. The known stroke risk factors such as hypertension, chronic alcohol consumption, etc., remained the leading causes of stroke recurrence. The studies reported a higher mortality rate ranging from 20.5 -23% among those with recurrent strokes compared to primary strokes. Conclusion: This systematic review is an update and summary of the available literature on stroke recurrence within sub-Saharan Africa. Further studies are warranted to assess the outcomes and burden of stroke recurrence in SSA.

Islamic trauma healing (ITH): A scalable, community-based program for trauma: Cluster randomized control trial design and method.

Background: Somalia has long been in a state of humanitarian crisis; trauma-related mental health needs are extremely high. Access to state-of-the-art mental health care is limited. Islamic Trauma Healing (ITH) is a manualized mosque-based, lay-led group intervention aimed at healing the individual and communal mental wounds of war and refugee trauma. The 6-session intervention combines Islamic principles with empirically-supported exposure and cognitive restructuring principles for posttraumatic stress disorder (PTSD). ITH reduces training time, uses a train the trainers (TTT) model, and relies on local partnerships embedded within the strong communal mosque infrastructure. Methods: We will conduct a hybrid effectiveness-implementation randomized control trial (RCT) in the Somaliland, with implementation in the cities of Hargeisa, Borama, and Burao. In this study, a lay-led, mosque-based intervention, Islamic Trauma Healing (ITH), to promote mental health and reconciliation will be examined in 200 participants, randomizing mosques to either immediate ITH or a delayed (waitlist; WL) ITH conditions. Participants will be assessed by assessors masked to condition at pre, 3 weeks, 6 weeks, and 3-month follow-up. Primary outcome will be assessor-rated posttraumatic stress symptoms (PTSD), with secondary outcomes of depression, somatic symptoms, and well-being. A TTT model will be tested, examining the implementation outcomes. Additional measures include potential mechanisms of change and cost effectiveness. Conclusion: This trial has the potential to provide effectiveness and implementation data for an empirically-based principle trauma healing program for the larger Islamic community who may not seek mental health care or does not have access to such care. Clinical trial registration number: ClinicalTrials.gov NCT05890482. World health organization trial registration data set information: See Supplemental Appendix 1.

Evidence-Supported Interventions for Reducing Secondary Stroke Risk in Sub-Saharan Africa: A Systematic Review.

The study set out to perform a systematic literature review of evidence-based interventions that target the reduction of secondary stroke risk in Africa. The review analyzed longitudinal intervention studies conducted in Sub-Saharan Africa, focusing on adult participants who had suffered a prior stroke. It encompassed publications and peer-reviewed papers sourced from reputable databases, including PubMed, Ovid, Cochrane, and Web of Science. Three randomized clinical trial (RCT) studies were included with sample sizes ranging from 16 to 400 participants, mean age ranged between 50 and 66 years, with 64.5% male participants. All studies applied multidisciplinary team interventions of enhanced patient follow-up involving care givers, nurse educators, physicians, and social workers. Interventions ranged from comprehensive patient education, tracking of medication adherence and enforcing healthy lifestyle behaviors (regular exercise, regular BP checks, and dietary changes). We found a decrease in Systolic Blood Pressure over time in 2 of 3 treatment groups, an improvement in medical adherence in all treatment groups, and a decrease in cholesterol levels in 1 treatment group. Evidence-based interventions involving multidisciplinary teams and comprehensive patient education were found to demonstrate promising results in reducing secondary stroke risk in Africa, leading to significant improvements in medical adherence and reductions in systolic blood pressure in the majority of treatment groups. However, more research is required to confirm the influence of these interventions on cholesterol levels and to establish their lasting advantages in preventing strokes among African communities.

The impact of a pharmacist-led oral anticancer clinic on medication adherence and laboratory monitoring.

PURPOSE: To evaluate the impact that a pharmacist-managed oral anticancer clinic has on patient adherence to oral anticancer therapy in regard to medication adherence and adherence to lab monitoring. METHODS: A retrospective chart review was completed for patients prescribed abiraterone, enzalutamide, or ibrutinib within the study time period. The primary outcome was assessing medication adherence by comparing the medication possession ratio (MPR) before (Phase 1) and after (Phase 2) initiation of the pharmacist-led oral anticancer therapy clinic. The secondary outcome was assessing lab monitoring adherence by patients and providers in Phase 1 and Phase 2. This will be done by assessing whether labs were ordered at the appropriate time frame by oncology providers, as well as whether or not the patient came and got these labs drawn. This study will also examine outcomes related to the pharmacist-led oral anticancer therapy clinic (phase 2) for descriptive purposes. RESULTS: A total of 189 charts were analyzed with 134 excluded and 55 included (25 patients in phase 1 and 30 patients in phase 2). Independent sample t-test analyses revealed a statistically significant increase (t(30.57) = -1.99; p = 0.027) in the MPR ratio between phase 1 (mean = 0.98, SD = 0.13) compared to phase 2 (mean = 1.04, SD = 0.08). For patient adherence to lab monitoring, there was a statistically significant improvement between phase 1 and phase 2 for patients on abiraterone (21.9% vs 67%; t(25) = -5.73; p < 0.001) and enzalutamide (35.7% vs. 90.5%; t(8) = -3.26; p = 0.006). However, for patients on ibrutinib, there was a slight decline in lab monitoring adherence between phase 1 and phase 2 but this effect was not statistically significant (56.2% vs. 51%; t(17) = 0.58; p = 0.283). Similar results were shown for provider adherence to lab monitoring. Descriptive outcomes showed that the pharmacist had, on average, 6.7 encounters per patient with the majority being phone and face-to-face appointments. CONCLUSIONS: Data from this study demonstrated that a pharmacist-led oral anticancer clinic can improve MPR ratios and patient adherence to oral anticancer medication regimens. In addition, patient and provider lab monitoring adherence was improved for abiraterone and enzalutamide. Improvement in patient and provider lab monitoring adherence for ibrutinib was not shown, possibly due to the impact of the COVID-19 pandemic, relatively small sample size, and retrospective nature of this study. The results of this study support that overall, a pharmacist-led oral anticancer clinic can significantly improve patient outcomes, which aligns with previous smaller studies that have shown similar benefits.

The Effects of Osteoarthritis on Depressive Symptomatology Among Older U.S. Military Veterans.

Osteoarthritis (OA) is a leading cause of disability among older adults. By 2050, approximately 60 million will suffer from arthritis adding up to a total societal cost of $65 billion. Chronic illnesses resulting in pain, and functional decline have been associated with depression in previous studies.A causal model was developed and tested using structural equation modeling that examined depression scores of 503 older (age 50-85), male Veterans with moderate to severe symptomatic OA of the knee\hip.The results of the structural equation modeling produced a final model of depressive symptomatology that fit the data well (Chi square = 12.23, DF = 11, p = .346; TLI = .99; CFI = 1.00; RMSEA = .02).The findings indicate the central role that OA severity (pain, stiffness, and functional difficulties) plays in the mental health of older Veterans in terms of the level of reported depressive symptoms.

Safety Competency: Exploring the Impact of Environmental and Personal Factors on the Nurse's Ability to Deliver Safe Care.

BACKGROUND: Patient safety is a priority in health care systems. Nurses' safety competence along with environmental and personal factors plays a role in patient safety. PURPOSE: The purpose of this study was to explore the relationships among safety competency, structural empowerment, systems thinking, level of education, and certification. METHODS: A cross-sectional exploratory design was used to collect data from nurses (n = 163) practicing in a large Midwestern hospital system. RESULTS: There were significant positive correlations between safety competency and ( a ) structural empowerment, ( b ) systems thinking, and ( c ) certification. Systems thinking explained 12.9% of the variance in the knowledge component of safety competency and 6.8% of the variance in the skill component of safety competency. Certification explained 2.4% of the variance in the skill component of safety competency. CONCLUSIONS: Understanding factors that affect safety competency supports the development of effective interventions that may improve safety.

Caregiver Burden in Distance Caregivers of Patients with Cancer.

Distance caregivers (DCGs), those who live more than an hour away from the care recipient, often play a significant role in patients' care. While much is known about the experience and outcomes of local family caregivers of cancer patients, little is known about the experience and outcomes of distance caregiving upon DCGs. The purpose of this study was to identify the relationships among stressors (patient cancer stage, anxiety, and depression), mediators (DCG emotional support and self-efficacy), and burden in DCGs' of patients with cancer. This study was a descriptive cross-sectional study and involved a secondary data analysis from a randomized clinical trial. The study sample consisted of 314 cancer patient-DCG dyads. The results of this study were: (1) 26.1% of DCGs reported elevated levels of burden; (2) significant negative relationships were found between mediators (DCG emotional support and self-efficacy) and DCG burden; and (3) significant positive relationships were found between patient anxiety, depression, and DCG burden. The prevalence of burden in DCGs, and its related factors, were similar to those of local caregivers of cancer patients, which suggests that interventions to reduce burden in local caregivers could be effective for DCGs as well.

Interactive Evidence-Based Pressure Injury Education Program for Hospice Nursing: A Quality Improvement Approach.

PURPOSE: The purpose of this quality improvement (QI) project was to develop and implement an interactive, evidence-based pressure injury (PI) education program and evaluate the impact on frontline hospice nursing staff knowledge and practice. PARTICIPANTS AND SETTING: The QI setting was a 12-bed inpatient hospice unit in a tertiary care Veterans Affairs (VA) Medical Center in Cleveland, Ohio. Nineteen licensed and unlicensed hospice nursing staff participated in this pre-/postworkshop project. APPROACH: Chart audit determined baseline PI incidence and prevalence on the inpatient hospice unit. Interviews with key leaders informed the need to develop and implement innovative PI education opportunities. A literature review determined existing standards regarding the benefits of PI education for nursing staff but did not reveal measurable targets in hospice settings. We developed a PI education intervention based on Kolcaba's Theory of Comfort framework and a Plan-Do-Study-Act (PDSA) performance improvement model. Education was delivered in 7 workshops, lasting 2 hours each. Knowledge, practice, and comfort for inpatient hospice nursing staff were evaluated at baseline and 8 weeks following the final refresher visit. Workshop satisfaction was collected once using standard program evaluation forms after final workshop delivery. OUTCOMES: We observed a significant improvement in staff PI knowledge (P = .001) and practice (P = .001) after initial workshop attendance and repeat engagement (P = .001). There was a large magnitude of effect for overall knowledge change (d = 1.04); similarly PI care planning and practice showed a large magnitude of effect and significant improvement (P = .001, d = 2.64). Staff comfort with job duties was stable with low effect size (mean 4.52, d = 0.04), and satisfaction with the workshop education was high (100% agreement with trainer effectiveness). IMPLICATIONS FOR PRACTICE: We found that frontline hospice nursing staff knowledge and practice improved after attendance at our evidence-based PI education program. Results of this QI project have stimulated ongoing discussion on how to sustain this program in our hospice setting.

Vision Deterioration and Hydrocephalus: Rare Presentations of Vestibular Schwannoma and Evolution of Management.

Introduction The incidence of vestibular schwannoma is reported as 12 to 54 new cases per million per year, increasing over time. These patients usually present with unilateral sensorineural hearing loss, tinnitus, or vertigo. Rarely, these patients present with symptoms of hydrocephalus or vision changes. Objective The study aimed to evaluate the surgical management of vestibular schwannoma at a single institution and to identify factors that may contribute to hydrocephalus, papilledema, and the need for pre-resection diversion of cerebrospinal fluid. Patients and Methods A retrospective review examining the data of 203 patients with vestibular schwannoma managed with surgical resection from May 2008 to May 2020. We stratified patients into five different groups to analyze: tumors with a diameter of ≥40 mm, clinical evidence of hydrocephalus, and of papilledema, and patients who underwent pre-resection cerebrospinal fluid (CSF) diversion. Results From May 2008 to May 2020, 203 patients were treated with surgical resection. Patients with tumors ≥40 mm were more likely to present with visual symptoms ( p < 0.001). Presentation with hydrocephalus was associated with larger tumor size ( p < 0.001) as well as concomitant visual symptoms and papilledema ( p < 0.001). Patients with visual symptoms presented at a younger age ( p = 0.002) and with larger tumors ( p < 0.001). Conclusion This case series highlights the rare presentation of vision changes and hydrocephalus in patients with vestibular schwannoma. We recommend urgent CSF diversion for patients with visual symptoms and hydrocephalus, followed by definitive resection. Further, vision may still deteriorate even after CSF diversion and tumor resection.

An interventional pilot of customized adherence enhancement combined with long-acting injectable antipsychotic medication (CAE-L) for poorly adherent patients with chronic psychotic disorder in Tanzania.

BACKGROUND: Chronic psychotic disorders (CPD) impose a particularly significant burden in resource-limited settings. Combining long-acting antipsychotic medication (LAI) with a customized adherence enhancement intervention (CAE-L) has potential to advance care. METHODS: Nineteen adults ≥ age 18 with CPD who self-reported missing ≥20% of antipsychotic medication within the last month were stabilized on oral haloperidol prior to transitioning to monthly haloperidol decanote for 25 weeks. Outcome evaluations were conducted at baseline and Week 25. Primary outcomes were oral medication adherence assessed via the Tablet Routines Questionnaire (TRQ) and LAI injection frequency. Secondary outcomes included CPD symptoms measured by the Brief Psychiatric Rating Scale and Clinical Global Impressions, functioning evaluated using the Social and Occupational Functioning Scale, and medication attitudes assessed with the Drug Attitudes Inventory. RESULTS: Mean sample age was 38.79 (SD = 9.31) with 18 individuals completing the study. There was one serious adverse event, a relapse into substance use, not deemed study-related. Mean endpoint LAI dosage was 65.79 mg (SD = 22.38). TRQ mean scores were 21.84 (SD =13.83) and 12.94 (SD = 11.93) at screen and baseline respectively. For only two individuals who were on concomitant oral medication at 25 weeks, TRQ change was not calculated. LAI injection frequency was 100%. Medication attitudes scores significantly improved from 7.89 (SD = 2.72) to 9.83 (SD = 0.52) (p = .001.) Changes in CPD symptoms and functioning were non-significant. CONCLUSIONS: CAE-L appears to be preliminarily feasible and acceptable in Tanzanians with CPD. TRIAL REGISTRATION: The study was registered on ClinicalTrials.gov (NCT04327843) on March 31, 2020.

A Methodological Note: An Introduction to Autoregressive Models.

The autoregressive model is a useful tool to analyze longitudinal data. It is particularly suitable for gerontological research as autoregressive models can be used to establish the causal relationship within a single variable over time as well as the causal ordering between two or more variables (e.g., physical health and psychological well-being) over time through bivariate autoregressive cross-lagged or contemporaneous models. Specifically, bivariate autoregressive models can explore the cross-lagged effects between two variables over time to determine the proper causal ordering between these variables. The advantage of analyzing cross-lagged effects is to test for the strength of prediction between two variables controlling for each variable's previous time score as well as the autoregressive component of the model. Bivariate autoregressive contemporaneous models can also be used to determine causal ordering within the same time point when compared to cross-lagged effects. Since the technique uses structural equation modeling, models are also adjusted for measurement error. This paper will present an introduction to setting up models and a step-by-step approach to analyzing univariate simplex autoregressive models, bivariate autoregressive cross-lagged models, and bivariate autoregressive contemporaneous models.

Caregivers' Use of Personal and Social Resourcefulness: Differences by Care Recipient Condition.

Although family caregivers who use both the personal and social resourcefulness skills have the best health outcomes, it is unknown whether their tendency toward personal or social resourcefulness varies by their care recipient's condition. This cross-sectional study of existing data from 234 caregivers of persons with various conditions examined five item pairs from the Resourcefulness Scale© with responses capturing personal and social resourcefulness in relation to anxiety, anger, sadness, indecision, and financial distress. Caregivers were categorized by the recipient's condition (amyotrophic lateral sclerosis, cancer, dementia, mental illness, Parkinson's disease, stroke, traumatic brain injury, other, or multiple conditions). Findings showed that across most groups, caregivers used both personal and social resourcefulness when angry, sad, or indecisive and personal resourcefulness when anxious or managing money. Caregivers of persons with cancer, traumatic brain injury, stroke, and mental illness differed. The findings provide a basis for future clinical trials across diverse caregiver groups.

Grandmothers raising grandchildren: managing, balancing and maintaining family relationships.

Most grandparents raising grandchildren are embedded in a network of family members who either help them carry out the caregiving task or complicate that role. This study examined how grandmothers described family relationships, that is, with the grandchild's parents, grandmother's spouses/partners, and other relatives. Data were drawn from 457 weekly journal entries submitted by 129 grandmother caregivers. Using thematic analysis, a three-person team coded using NVIVO 12. Grandmothers described three overarching relationship themes: managing conflicted relationships with the grandchild's parents, balancing relationships with their spouse/partner, and maintaining relationships with other relatives. Implications for practice are provided.

Development and Testing of a Spiritual Resourcefulness Scale: Holistic Expansion in Operationalizing the Resourcefulness Construct.

Purpose: Research supports holistic expansion of the construct of resourcefulness by adding spiritual practices to the existing personal and social dimensions. This study describes the development and testing of items to measure spiritual resourcefulness. Methods/Design: Study phases were: (1) focus group development of item stems and responses; (2) expert testing; (3) scale construction; (4) field testing in 234 family caregivers; and (5) psychometric analysis to identify items for inclusion in a final scale. Findings: A focus group developed 40 item stems with potential responses reflecting three conceptual components of spiritual practices (rational, ritualistic, and relational). Content experts selected the best response for each item. A six-point Likert scale consistent with the Resourcefulness Scale© was constructed. Data from field testing were factor analyzed. The best solution revealed two factors containing 12 items. Ritualistic and relational items loaded together (44.7% variance explained). Rational items loaded separately (19.5% variance explained). Higher-order factor analysis indicated the two subscales reflected a single construct (71.93% variance explained; r = .44, p < .001). Conclusion: Availability of a psychometrically sound measure of spiritual resourcefulness is critical to expand resourcefulness training interventions to be more holistic. Clinical interventions can be enriched by including strategies to enhance personal, social, and spiritual resourcefulness skills.

Effects of Postpartum Fatigue and Depressive Cognitions on Life Satisfaction and Quality of Life in Arab Postpartum Women: The Intervening Role of Resourcefulness.

The purpose of this study is to explore the relationships among postpartum fatigue (PPF), depressive cognitions, resourcefulness, quality of life, and life satisfaction in Arab postpartum mothers. A conceptual framework is used in this study based on the middle range theory of resourcefulness, which Zauszniewski developed in 2006. The study is a cross-sectional descriptive design with 123 postpartum women who had given birth within the past six months. used WhatsApp and Facebook for recruitment. developed the self-administered online survey in Qualtrics and collected data from 6 January 2017, to 6 February 2017. Correlation analysis is used to address the research aim and used the P value of 0.05 to determine the significance of the results. There were significant correlations among depressive cognitions and resourcefulness, life satisfaction, and quality of life; there were also significant correlations between PPF and life satisfaction, as well as among resourcefulness, quality of life, and life satisfaction. The results of this study emphasized the importance of assessing depressive symptoms and PPF in mothers early in the postpartum period. The results may contribute to designing future intervention studies aimed toward decreasing the risk of mothers with PPF developing more serious depressive symptoms.

Discontinuation of Proton Pump Inhibitors in Patients With Chronic Kidney Disease.

Purpose: Proton pump inhibitors (PPIs) are commonly used medications and are historically well tolerated. Recent studies have linked PPI use to the development of chronic kidney disease (CKD) and end-stage renal disease. This study investigated the impact of discontinuing PPIs on renal function in patients with CKD. Methods: We conducted a retrospective chart review of patients with established CKD, defined as 2 eGFR (estimated glomerular filtration rate) measurements of less than 60 mL/min/1.73 m2 at least 90 days apart, who were on a PPI from January 1, 2014 to December 31, 2014, with a medication possession ratio greater than or equal to 70%. We compared baseline eGFR to a final eGFR after at least 6 months of discontinuation or continuation of a PPI. After power analysis, we targeted an enrollment of 200 patients (100 in each group) to achieve a power of 0.80 and an alpha of 0.05. Summary: A total of 97 patients in the PPI discontinuation group and 100 patients in the PPI continuation group met the study inclusion criteria. Baseline eGFR in the PPI continuation group was 47.9 mL/min/1.73 m2 and 50.7 mL/min/1.73 m2 in the discontinuation group. Final eGFR in the PPI continuation group was significantly higher than baseline at 51.1 mL/min/1.73 m2 (+3.25 ± 12.8, P = .01). Final eGFR in the PPI discontinuation group was 51.8 mL/min/1.73 m2 (+1.09 ± 12.8, P = .3). The average time between baseline and final eGFRs was 270 days in the PPI continuation group and 301 days in the discontinuation group. There was no statistically significant difference in the change in eGFRs between groups (95% confidence interval [CI] = -5.48-2.03, P = .37). Conclusions: Proton pump inhibitor discontinuation after prolonged continuous use in patients with CKD was not associated with a significant change in renal function after 1 year.

Systematic Literature Review of Psychiatric Comorbidities in Adults with Epilepsy.

BACKGROUND AND PURPOSE: Mental illness is disproportionately common in people with epilepsy (PWE). This systematic literature review identified original research articles that reported the prevalence of psychiatric comorbidities based upon clinical assessments in a sample of PWE and assessed the clinical features of the populations found in studies included in our review of mental health comorbidity. METHODS: The included articles were written in English and published from 2008 to 2018, and focused on adults aged ≥18 years who had psychiatric diagnoses determined in clinical assessments, such as those found in medical records, clinician psychiatric evaluations, structured diagnostic interviews, and mental health screening questionnaires specific for a psychiatric disorder. The primary outcome was the prevalence of psychiatric comorbidities as a percentage of the total sample of PWE. Additional data included the overall sample size, mean age, epilepsy type, study design, and method of diagnosis. A modified Newcastle Ottawa Scale was used to assess the quality of the studies. All 23 articles that were consistent with the inclusion criteria were related to observational studies. RESULTS: Mood disorders and anxiety disorders were the most common psychiatric comorbidities, with prevalence rates of 35.0% and 25.6%, respectively. Major depressive disorder was the most common mood disorder, with a prevalence of 24.2%. Post-traumatic stress disorder (PTSD) had the highest reported prevalence among anxiety disorders, at 14.2%, followed by general anxiety disorder at 11.1%. Other comorbidities included psychosis (5.7%), obsessivecompulsive disorder (3.8%), schizophrenia (1.7%), bipolar disorder (6.2%), and substance abuse (7.9%). The pooled prevalence of suicidality, as reported for two studies, was 9.3%. Temporal lobe epilepsy (TLE) was associated with higher levels of psychiatric comorbidity. Two (8.7%) of the 23 studies compared psychiatric comorbidities in TLE with that of extratemporal lobe epilepsy (ETLE), and one of these two studies found that depression was more common in TLE (53.8%) than in ETLE (25%). Regarding seizure types, partial seizures were associated with a higher prevalence of depression vs generalized seizures. CONCLUSIONS: This systematic literature review of recent original research found a relatively high prevalence of mental health comorbidities in PWE. Mood and anxiety disorders are the most common comorbidities, while psychotic spectrum conditions such as schizophrenia and bipolar disorder are much rarer. The prevalence of comorbidity may vary with the epilepsy type and treatment responsiveness. These findings suggest that screening tools for depression and anxiety should be included as part of the training for epilepsy care, while resources for other relatively common conditions such as PTSD and substance abuse disorders should be readily available to neurology specialists who treat PWE.

Adjuvant effect of type I interferon induced by many but not all commercial influenza vaccines.

BACKGROUND: Seasonal influenza vaccines approved and offered in the United States have varying reported degrees of effectiveness year over year and between manufacturers. Influenza vaccines produced from live virus may include single stranded RNA (ssRNA) that is a potent activator of the innate Toll-like receptor 7 (TLR-7) ligand. Plasmacytoid dendritic cells (pDC) can be activated by ssRNA to produce type I interferons such as IFN-α, which has been shown to have an adjuvant-like effect. OBJECTIVE: Our aim was to determine if IFN-α induction in peripheral blood mononuclear cells (PBMCs) exposed to eight different commercial influenza vaccines is a pDC-dependent process mediated through TLR-7 signaling. RESULTS: We demonstrate the ability of multiple vaccines to induce IFN-α in a TLR-7-dependent fashion. A number of vaccines however lacked IFN-α induction. The significance of these differences between vaccines is unclear, since all the approved vaccine formulations offer some degree of protection.