BACKGROUND: A multicomponent meningococcal serogroups ABCWY vaccine (MenABCWY) could provide broad protection against disease-causing meningococcal strains and simplify the immunisation schedule. The aim of this trial was to confirm the effect of the licensed meningococcal serogroup B (MenB) vaccine, 4CMenB, against diverse MenB strains, and to assess the breadth of immune response against a panel of 110 MenB strains for MenABCWY containing the antigenic components of 4CMenB and licensed serogroups ACWY vaccine, MenACWY-CRM, the non-inferiority of the immune response with MenABCWY versus 4CMenB and MenACWY-CRM, safety, and MenABCWY lot-to-lot consistency. METHODS: We conducted a phase 3 randomised, controlled, observer-blinded trial of healthy adolescents and young adults (age 10-25 years) across 114 centres in Australia, Canada, Czechia, Estonia, Finland, Türkiye, and the USA. Exclusion criteria included previous vaccination with a MenB vaccine or (within the last 4 years) MenACWY vaccine. Participants were randomly allocated (5:5:3:3:3:1 ratio) via a central randomisation system using a minimisation procedure to receive 4CMenB at months 0, 2, and 6 (referred to as 4CMenB 0-2-6 hereafter); or 4CMenB at months 0 and 6 (referred to as 4CMenB 0-6 hereafter); or MenABCWY (three groups, each receiving one production lot of the MenACWY-CRM component) at months 0 and 6; or MenACWY-CRM at month 0. Demonstration in the per-protocol set of the consistency of three MenACWY-CRM component lots of the MenABCWY vaccine was a primary objective (demonstrated with two-sided 95% CIs for the ratio of human serum bactericidal antibody [hSBA] geometric mean titres against each serogroup within predefined criteria [0·5-2·0]). The primary endpoints (breadth of immune response) for the MenB component of MenABCWY and 4CMenB were measured using the endogenous complement hSBA (enc-hSBA) assay against a panel of 110 diverse MenB invasive disease strains. For each serum sample, 35 strains from the 110 MenB strain panel were randomly selected for testing. The 4CMenB breadth of immune response data have been published separately. For MenABCWY, breadth of immune response was assessed in two analyses: a test-based analysis of the percentage of samples (tests) without bactericidal serum activity against MenB strains 1 month after two MenABCWY doses versus the percentage after one MenACWY-CRM dose in the per-protocol set, and a responder-based analysis of the percentage of participants (responders) whose sera killed 70% or more strains at 1 month after two MenABCWY doses in the full analysis set. A lower limit of two-sided 95% CI above 65% would demonstrate breadth of immune response. Other primary outcomes included non-inferiority (5% margin) of two MenABCWY doses versus two 4CMenB doses by enc-hSBA assay in the per-protocol set, non-inferiority (10% margin) of two MenABCWY doses versus one MenACWY-CRM dose in MenACWY vaccine-naive participants by traditional hSBA assay in the per-protocol set, and safety in all vaccinated participants. This trial is registered with ClinicalTrials.gov, NCT04502693, and is complete. FINDINGS: Between Aug 14, 2020, and Sept 3, 2021, 3651 participants were enrolled and randomly allocated (900 in the 4CMenB 0-2-6 group and 908 in the 4CMenB 0-6 group, 1666 in the three MenABCWY groups combined, and 177 in the MenACWY-CRM group). All primary objectives for MenABCWY were met. Consistency of immune responses against the three production lots of the MenACWY component of MenABCWY was demonstrated since two-sided 95% CIs for the ratios of hSBA geometric mean titres against serogroups A, C, W, and Y for each pair of lots were within the predefined equivalence criteria. The lot data were pooled for the remainder of MenABCWY endpoints. By enc-hSBA assay, breadth of immune response against the MenB strain panel was 77·9% (95% CI 76·6 to 79·2) in the test-based analysis and 84·1% (81·4 to 86·5; 687 of 817 participants) in the responder-based analysis. Non-inferiority of MenABCWY to 4CMenB was demonstrated by enc-hSBA assay: the difference in percentage of samples with bactericidal serum activity between the MenABCWY group (82·5% [95% CI 82·1 to 83·0]; 21 222 of 25 715) and 4CMenB 0-2 group (83·1% [82·7 to 83·6]; 22 921 of 27 569) was -0·61% (-1·25 to 0·03). Non-inferiority of two-dose MenABCWY to one-dose MenACWY-CRM was demonstrated by traditional hSBA assay, with differences between the MenABCWY group and MenACWY group in percentages of participants with a four-fold rise in hSBA titres of 11·3% (5·9 to 19·0) for serogroup A, 47·2% (38·1 to 56·3) for serogroup C, 35·3% (26·9 to 44·5) for serogroup W, and 27·0% (19·4 to 35·8) for serogroup Y. MenABCWY reactogenicity was mostly of mild or moderate severity and transient, with similar frequencies of adverse events in the MenABCWY and 4CMenB groups and no safety concerns were identified. INTERPRETATION: This study demonstrates breadth of immune response against a panel of 110 MenB strains for the MenB component of the investigational MenABCWY vaccine, when administered as a 0-6 months schedule to the target population of adolescents and young adults, with predefined criteria for success met for both breadth of immune response endpoints and for non-inferiority versus 4CMenB. This investigational vaccine could provide broad meningococcal serogroup coverage in a simplified immunisation schedule, thus aiding the public health attempt in preventing invasive meningococcal disease due to five Neisseria meningitidis serogroups in adolescents and young adults. FUNDING: GSK.

• MeSH
• Child MeSH
• Adult MeSH
• Immunogenicity, Vaccine * MeSH
• Single-Blind Method MeSH
• Humans MeSH
• Meningococcal Infections * prevention & control   immunology   MeSH
• Meningococcal Vaccines * immunology   adverse effects   administration & dosage   MeSH
• Adolescent MeSH
• Young Adult MeSH
• Neisseria meningitidis, Serogroup B immunology   MeSH
• Neisseria meningitidis immunology   MeSH
• Antibodies, Bacterial blood   MeSH
• Healthy Volunteers MeSH
• Check Tag
• Child MeSH
• Adult MeSH
• Humans MeSH
• Adolescent MeSH
• Young Adult MeSH
• Male MeSH
• Female MeSH
• Publication type
• Journal Article MeSH
• Equivalence Trial MeSH
• Clinical Trial, Phase III MeSH
• Multicenter Study MeSH

BACKGROUND: Vaccination against 5 prominent meningococcal serogroups (A/B/C/W/Y) is necessary for broad disease protection. We report immunopersistence through 4 years after a 2-dose (6-month interval) pentavalent MenABCWY primary vaccine series and safety and immunogenicity of a booster administered 4 years after primary vaccination. METHODS: This randomized, active-controlled, observer-blinded study was conducted in the United States and Europe. In stage 1, healthy MenACWY vaccine-naive or -experienced 10- to 25-year-olds were randomized 1:2 to receive MenABCWY and placebo or MenB-fHbp and MenACWY-CRM. Eligible participants were randomly selected to participate in stage 2, which was an open-label immunopersistence and booster extension. Immunogenicity was assessed through serum bactericidal antibody using human complement (hSBA) assays with serogroups A/C/W/Y (MenA/C/W/Y) and 4 primary serogroup B (MenB) test strains. Immunogenicity endpoints included hSBA seroprotection rates through 48 months after primary vaccination and 1 month after the booster. Safety endpoints included booster reactogenicity events and adverse events (AEs). RESULTS: Of 1379 eligible participants, 353 entered stage 2; 242 completed the 48-month blood draw after primary vaccination and 240 completed the booster vaccination phase. MenA/C/W/Y seroprotection rates remained high for 4 years following a 2-dose MenABCWY primary series (MenACWY-naive, 62.0 %-100.0 %; MenACWY-experienced, 98.7 %-100.0 %) and trended higher than those after a single MenACWY-CRM dose (MenACWY-naive, 38.1 %-95.2 %; MenACWY-experienced, 89.7 %-100.0 %). Corresponding seroprotection rates against MenB remained stable and generally higher than baseline (MenABCWY, 18.2 %-36.6 %; MenB-fHbp, 16.2 %-31.9 % across strains). Following a booster, seroprotection rates against all 5 serogroups were ≥ 93.8 % across groups. Most booster dose reactogenicity events were mild or moderate in severity, and AEs were infrequent. CONCLUSIONS: Immune responses remained high for MenA/C/W/Y and above baseline for MenB through 4 years after the MenABCWY primary series, with robust responses for all 5 serogroups observed following a booster. The MenABCWY booster had an acceptable safety and tolerability profile consistent with the primary series. NCT03135834.

• MeSH
• Child MeSH
• Adult MeSH
• Immunogenicity, Vaccine MeSH
• Complement System Proteins immunology   MeSH
• Humans MeSH
• Meningococcal Infections * prevention & control   immunology   MeSH
• Meningococcal Vaccines * immunology   adverse effects   administration & dosage   MeSH
• Adolescent MeSH
• Young Adult MeSH
• Neisseria meningitidis immunology   MeSH
• Antibodies, Bacterial * blood   MeSH
• Immunization, Secondary * methods   MeSH
• Serogroup MeSH
• Vaccines, Conjugate immunology   administration & dosage   adverse effects   MeSH
• Check Tag
• Child MeSH
• Adult MeSH
• Humans MeSH
• Adolescent MeSH
• Young Adult MeSH
• Male MeSH
• Female MeSH
• Publication type
• Journal Article MeSH
• Randomized Controlled Trial MeSH
• Geographicals
• Europe MeSH
• United States MeSH

Conflict deeply affects human experiences, frequently testing individual resilience to its breaking point and leaving enduring psychological and societal wounds. The current conflict in Ukraine, initiated by Russia's invasion in 2022, illustrates this phenomenon by altering regional relationships and triggering a major humanitarian crisis marked by extensive displacement, loss of life, and emotional turmoil. This study explores the factors influencing hope and distress in Ukraine alongside six nearby European countries during the ongoing conflict. A cross-sectional survey collected data primarily via internet panel samples from the Czech Republic, Georgia, Lithuania, Poland, Romania, Slovakia, and Ukraine in the second year since the war's initiation. The current study utilised validated instruments, collecting data on levels of hope, distress, individual resilience, community resilience, societal resilience, morale, sense of danger, perceived security threats, and demographic characteristics. Hope and distress levels differ across countries, with Ukraine exhibiting the highest levels of both (3.74 ± 1.02 and 2.89 ± 0.87, respectively). Overall, average scores of hope were higher than average distress levels. Across the regression models for the seven countries, hope showed strong associations with individual (between β = 0.089 and β = 0.327) and societal resilience (between β = 0.206 and β = 0.514), while morale (between β = -0.104 and β = -0.479) and individual resilience (between β = -0.077 and β = -0.335) displayed a protective relationship against distress (all β values were significant, p < 0.01). Monitoring hope and distress is crucial during the Russian-Ukrainian war and other adversities, as these factors give insight into the current and future psychological states of affected populations. The results offer valuable information that can guide the development of tailored strategies to enhance hope and buffer distress in war-impacted countries, as well as those experiencing its broader effects. Fostering individual and societal resilience, alongside enhancing morale, may strengthen hope and mitigate distress amid adversity. Developing targeted interventions that address each population's unique needs, as well as their sociocultural and geopolitical contexts can enhance efficacy.

• MeSH
• Adult MeSH
• Middle Aged MeSH
• Humans MeSH
• Young Adult MeSH
• Hope * MeSH
• Armed Conflicts * psychology   MeSH
• Cross-Sectional Studies MeSH
• Resilience, Psychological * MeSH
• Psychological Distress * MeSH
• Stress, Psychological * psychology   MeSH
• Check Tag
• Adult MeSH
• Middle Aged MeSH
• Humans MeSH
• Young Adult MeSH
• Male MeSH
• Female MeSH
• Publication type
• Journal Article MeSH
• Geographicals
• Russia MeSH
• Ukraine MeSH

Introduction: The topic of work-life harmony of Child Protection Authority (OSPOD) workers is crucial, not only for their personal well-being, but also for the long-term sustainability of this demanding profession. This article focuses on developing a deeper understanding of the strategies that workers use to maintain work-life harmony, and provides insights into the role of organizational support in this process. Methods: The research was conducted through interpretive phenomenological analysis (IPA) and qualitative semi-structured interviews. Results: The results show that employees use a variety of individual strategies such as self-development, mindset, networking, time management and personal space for relaxation. They perceive support from the organization mainly through supervision, flexible working hours, professional training, and employee benefits. An interesting finding was that workers did not pay attention to the development of spiritual needs, which are an important aspect of wellbeing. Conclusion: The study highlights the importance of systematic organizational support in the field of work-life harmony and recommends measures that can contribute to the development of wellbeing of workers and their sustainability in the profession.

• MeSH
• Adaptation, Psychological MeSH
• Humans MeSH
• Organization and Administration MeSH
• Resilience, Psychological MeSH
• Work-Life Balance * classification   methods   MeSH
• Interviews as Topic MeSH
• Child Welfare psychology   MeSH
• Social Workers * psychology   MeSH
• Check Tag
• Humans MeSH
• Publication type
• Research Support, Non-U.S. Gov't MeSH

Pacienti s pokročilým chronickým ochorením pečene (ACLD) a tí, ktorí čakajú na transplantáciu pečene (LT) alebo ju už podstúpili, sú vystavení vysokému riziku infekčných komplikácií v dôsledku oslabeného imunitného systému. Vakcinácia predstavuje kľúčovú stratégiu na prevenciu závažných infekcií v tejto vysoko rizikovej skupine. Účinnosť vakcín závisí od načasovania ich podania – optimálne je vakcinovať pacientov v raných štádiách ochorenia pred transplantáciou, keď je imunitná odpoveď najlepšia. Po transplantácii je vakcinácia možná, no vyžaduje stabilizáciu imunosupresívnej terapie. Podávanie živých vakcín po LT je kontroverzné, hoci nové výskumy naznačujú ich potenciálnu bezpečnosť v špecifických prípadoch. Tento článok sumarizuje odporúčané vakcinačné stratégie v Európe a vo svete, hodnotí účinnosť vakcinácie v tejto populácii a zdôrazňuje potrebu ďalšieho výskumu na optimalizáciu očkovacích postupov u pacientov s chronickými ochoreniami pečene a po transplantácii.

Patients with advanced chronic liver disease (ACLD), those awaiting liver transplantation (LT), and post-transplant recipients face a high risk of infectious complications due to immune dysfunction. Vaccination is a key preventive strategy to protect this high-risk group from severe infections. The effectiveness of vaccines depends on the timing of administration – optimal vaccination occurs in the early stages of liver disease before transplantation when the immune response is strongest. Post-transplant vaccination is possible, but requires stabilization of immunosuppressive therapy. The administration of live vaccines after LT remains controversial, although recent research suggests their potential safety in specific cases. This paper summarizes recommended vaccination strategies in Europe and worldwide, evaluates the effectiveness of vaccination in this patient population, and highlights the need for further research to optimize immunization protocols for patients with chronic liver diseases and transplant recipients.

• MeSH
• Immunosuppression Therapy MeSH
• Communicable Diseases MeSH
• Humans MeSH
• Liver Diseases MeSH
• Liver Transplantation * MeSH
• Vaccination * MeSH
• Check Tag
• Humans MeSH
• Publication type
• Review MeSH

INTRODUCTION: The immunosuppressive roles of galectin-3 (Gal-3) in carcinogenesis make this lectin an attractive target for pharmacological inhibition in immunotherapy. Although current clinical immunotherapies appear promising in the treatment of solid tumors, their efficacy is significantly weakened by the hostile immunosuppressive tumor microenvironment (TME). Gal-3, a prominent TME modulator, efficiently subverts the elimination of cancer, either directly by inducing apoptosis of immune cells or indirectly by binding essential effector molecules, such as interferon-gamma (IFNγ). METHODS: N-(2-Hydroxypropyl)methacrylamide (HPMA)-based glycopolymers bearing poly-N-acetyllactosamine-derived tetrasaccharide ligands of Gal-3 were designed, synthesized, and characterized using high-performance liquid chromatography, dynamic light scattering, UV-Vis spectrophotometry, gel permeation chromatography, nuclear magnetic resonance, high-resolution mass spectrometry and CCK-8 assay for evaluation of glycopolymer non-toxicity. Pro-immunogenic effects of purified glycopolymers were tested by apoptotic assay using flow cytometry, competitive ELISA, and in vitro cell-free INFγ-based assay. RESULTS: All tested glycopolymers completely inhibited Gal-3-induced apoptosis of monocytes/macrophages, of which the M1 subtype is responsible for eliminating cancer cells during immunotherapy. Moreover, the glycopolymers suppressed Gal-3-induced capture of glycosylated IFNγ by competitive inhibition to Gal-3 carbohydrate recognition domain (CRD), which enables further inherent biological activities of this effector, such as differentiation of monocytes into M1 macrophages and repolarization of M2-macrophages to the M1 state. CONCLUSION: The prepared glycopolymers are promising inhibitors of Gal-3 and may serve as important supportive anti-cancer nanosystems enabling the infiltration of proinflammatory macrophages and the reprogramming of unwanted M2 macrophages into the M1 subtype.

• MeSH
• Acrylamides chemistry   pharmacology   MeSH
• Apoptosis drug effects   MeSH
• Galectin 3 * antagonists & inhibitors   MeSH
• Galectins MeSH
• Interferon-gamma * metabolism   MeSH
• Blood Proteins MeSH
• Humans MeSH
• Macrophages drug effects   MeSH
• Monocytes * drug effects   MeSH
• Tumor Microenvironment drug effects   MeSH
• Polymers * chemistry   pharmacology   MeSH
• Antineoplastic Agents * pharmacology   chemistry   MeSH
• Check Tag
• Humans MeSH
• Publication type
• Journal Article MeSH

Cíl: Fénixin má endoteliální ochranné a protizánětlivé vlastnosti a je spojován s rozvojem hypertenze. Vzhledem k tomu, že endoteliální dysfunkce hrají významnou roli v patofyziologii preeklampsie, zaměřili jsme se na vyšetření sérových hladin fénixinu-14 a fénixinu-20 u těhotných žen s diagnostikovanou preeklampsií. Materiál a metody: V této průřezové případové studii tvořilo 45 těhotných žen s diagnostikovanou preeklampsií skupinu preeklampsie, zatímco 45 zdravých těhotných žen, které odpovídaly skupině preeklampsie věkem, indexem tělesné hmotnosti a gestačním věkem plodu, sloužilo jako kontrolní skupina. Pro analýzu hladin fénixinu-14 a fénixinu-20 ve vzorcích séra byly použity komerční soupravy. Výsledky: Bylo zjištěno, že ve skupině s preeklampsií byla hladina fénixinu-14 v séru 390,3 pg/ml, zatímco v kontrolní skupině byla 393,2 pg/ml (p = 0,434). Hladina fénixinu-20 v séru ve skupině s preeklampsií byla 346,6 pg/ml a v kontrolní skupině 379,9 pg/ml (p = 0,278). Když byla skupina s preeklampsií rozdělena do podskupin podle závažnosti onemocnění a počátku onemocnění a porovnána s kontrolní skupinou, v hladinách sérového fénixinu-14 a fénixinu-20 mezi skupinami nebyl nalezen žádný významný rozdíl. Závěr: V této studii byly sérové hladiny fénixinu-14 a fénixinu-20 u preeklampsie a u kontrolní skupiny podobné. Ačkoli je velikost vzorku příliš malá na to, aby bylo možné vyvodit definitivní závěr, zjištění naznačují, že fénixin-14 ani fénixin-20 v patofyziologii preeklampsie nehraje roli.

Objective: Phoenixin has endothelial protective and anti-inflammatory properties, but has been associated with the development of hypertension. Given that endothelial dysfunction plays a significant role in the pathophysiology of preeclampsia, we aimed to investigate the serum levels of phoenixin-14 and phoenixin-20 in pregnant women diagnosed with preeclampsia. Materials and methods: In this cross-sectional case-control study, 45 pregnant women diagnosed with preeclampsia comprised the preeclampsia group, while 45 healthy pregnant women, matched to the preeclampsia group by age, body mass index, and gestational age, served as the control group. Commercial kits were used to analyze phoenixin-14 and phoenixin-20 levels in serum samples. Results: Serum phoenixin-14 level was 390.3 pg/mL in the preeclampsia group and 393.2 pg/mL in the control group (P = 0.434). While the serum phoenixin-20 level was 346.6 pg/mL in the preeclampsia group, it was 379.9 pg/mL in the control group (P = 0.278). When the preeclampsia group was divided into subgroups according to the severity of the disease and the onset of the disease and compared with the control group, no significant difference was found between the groups regarding serum phoenixin-14 and phoenixin-20 levels. Conclusion: In this study, serum levels of phoenixin-14 and phoenixin-20 were similar in both the preeclampsia and control groups. Although the sample size is too small to draw a definitive conclusion, findings suggest that phoenixin-14 and phoenixin-20 do not play a role in the pathophysiology of preeclampsia.

• Keywords
• phoenixin 14, phoenixin 20,
• MeSH
• Biomarkers blood   MeSH
• Pregnancy Complications classification   blood   MeSH
• Humans MeSH
• Neuropeptides * analysis   classification   blood   MeSH
• Pre-Eclampsia * diagnosis   epidemiology   blood   MeSH
• Cross-Sectional Studies MeSH
• Pregnant People MeSH
• Check Tag
• Humans MeSH
• Female MeSH
• Geographicals
• Turkey MeSH

BACKGROUND: The potential cross-protective effect of measles, mumps, and rubella (MMR) vaccination against coronavirus disease 2019 (COVID-19) is debated. Although immunological studies suggest cross-reactivity between MMR-induced immunity and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), epidemiological evidence remains inconclusive. This study examined the association between an additional MMR dose and both COVID-19 clinical and serological outcomes in an adult cohort with verified pre-pandemic measles immunity. METHODS: In 2019, prior to the COVID-19 pandemic, 3027 healthcare workers from a Czech university hospital underwent measles serology testing. Seronegative individuals were offered a single additional MMR dose. Between 2020 and 2021, 261 individuals from the original sample subsequently contracted COVID-19 and underwent post-infection SARS-CoV-2 immunoglobulin G (IgG) serology testing, having remained unvaccinated against COVID-19 until that time. RESULTS: Among 212 women and 49 men (mean age: 42.7 years), 150 were measles-seropositive (without additional vaccination) and 111 were measles-seronegative but received an additional MMR dose. Following COVID-19, 216 participants (82.8 %) exhibited SARS-CoV-2 IgG seropositivity. No significant relationship was observed between measles immunity or MMR vaccine administration and COVID-19 clinical characteristics. However, individuals who received an additional MMR dose were significantly more likely to develop SARS-CoV-2 IgG seropositivity (88.3 % vs. 78.7 %; p = 0.042). Regression analysis confirmed additional MMR vaccination as an independent predictor of post-COVID-19 seropositivity (odds ratio 1.81, 95 % confidence interval 1.17-2.81, p = 0.008), irrespective of the interval between MMR vaccination and COVID-19 symptom onset. No correlation was found between pre-pandemic measles antibody titers and SARS-CoV-2 antibody levels (r = 0.09, p = 0.246). CONCLUSION: While no protective effect of adult MMR vaccination on COVID-19 clinical outcomes was observed, a significant immunological interaction was identified. These findings align with the concept of trained immunity and warrant further investigation.

• MeSH
• COVID-19 * immunology   prevention & control   epidemiology   MeSH
• Adult MeSH
• Immunoglobulin G blood   immunology   MeSH
• Middle Aged MeSH
• Humans MeSH
• Mumps prevention & control   MeSH
• Antibodies, Viral blood   immunology   MeSH
• Retrospective Studies MeSH
• SARS-CoV-2 immunology   MeSH
• Immunization, Secondary * MeSH
• Measles prevention & control   immunology   MeSH
• Measles-Mumps-Rubella Vaccine * immunology   administration & dosage   MeSH
• Rubella prevention & control   MeSH
• Check Tag
• Adult MeSH
• Middle Aged MeSH
• Humans MeSH
• Male MeSH
• Female MeSH
• Publication type
• Journal Article MeSH
• Geographicals
• Czech Republic MeSH

Breast milk is crucial for infant health, offering essential nutrients and immune protection. However, despite increasing exposure risks from nanoparticles (NPs), their potential infiltration into human breast milk remains poorly understood. This study provides a comprehensive chemical profile of NPs in human breast milk, analyzing their elemental composition, surface charge, hydrodynamic size, and crystallinity. NPs were detected in 42 out of 53 milk samples, with concentrations reaching up to 1.12 × 1011 particles/mL. These particles comprised nine elements, with O, Si, Fe, Cu, and Al being the most frequently detected across all samples. We establish a mechanistic axis for NP infiltration, involving penetration of the intestine/air-blood barriers, circulation in blood vessels, crossing the blood-milk barrier via transcytosis or immune cell-mediated transfer, and eventual accumulation in milk. Structure-activity relationship analysis reveals that smaller, neutral-charged NPs exhibit stronger infiltration capacity, offering potential for regulating NP behavior at biological barriers through engineering design. This study provides the chemical profiles of NPs in human breast milk and uncovers their infiltration pathways.

• MeSH
• Humans MeSH
• Milk, Human * chemistry   metabolism   MeSH
• Nanoparticles * chemistry   analysis   MeSH
• Particle Size MeSH
• Structure-Activity Relationship MeSH
• Check Tag
• Humans MeSH
• Female MeSH
• Publication type
• Journal Article MeSH

We estimated the effectiveness of the adapted monovalent XBB.1.5 COVID-19 vaccines against PCR-confirmed SARS-CoV-2 hospitalisation during the BA.2.86/JN.1 lineage-predominant period using a multicentre test-negative case-control study in Europe. We included older adults (≥ 65 years) hospitalised with severe acute respiratory infection from November 2023 to May 2024. Vaccine effectiveness was 46% at 14-59 days and 34% at 60-119 days, with no effect thereafter. The XBB.1.5 COVID-19 vaccines conferred protection against BA.2.86 lineage hospitalisation in the first 4 months post-vaccination.

• MeSH
• COVID-19 * prevention & control   epidemiology   immunology   MeSH
• Hospitalization * statistics & numerical data   MeSH
• Humans MeSH
• SARS-CoV-2 * immunology   MeSH
• Aged, 80 and over MeSH
• Aged MeSH
• Case-Control Studies MeSH
• Vaccine Efficacy * MeSH
• Vaccination statistics & numerical data   MeSH
• COVID-19 Vaccines * immunology   administration & dosage   MeSH
• Check Tag
• Humans MeSH
• Male MeSH
• Aged, 80 and over MeSH
• Aged MeSH
• Female MeSH
• Publication type
• Journal Article MeSH
• Multicenter Study MeSH
• Research Support, Non-U.S. Gov't MeSH
• Geographicals
• Europe MeSH