Divergent effects of emm types 1 and 12 on invasive group A streptococcal infections-results of a retrospective cohort study, Germany 2023.

As a potential side effect of the severe acute respiratory syndrome coronavirus type 2 pandemic, invasive group A Streptococcus (iGAS) infections in Europe have increased dramatically in both children and adults in the end of 2022. This epidemiological and molecular study describes the distributions of streptococcal genes encoding the M antigen (emm types) and superantigens in patients with invasive and non-invasive GAS infections. From December 2022 to December 2023, a total of 163 GAS isolates were collected from sterile and non-sterile sites of patients at five hospitals in Germany including two tertiary care centers. Genes encoding M protein and superantigens were determined following the guidelines of CDC Streptococcus laboratory. Patients' characteristics were reviewed retrospectively. Correlations of clinical factors, emm types, and superantigens with rates of invasive infections were analyzed. Of the 163 included GAS cases, 112 (69%) were considered as invasive. In total, 33 different emm types were observed, of which emm1.0 (n = 49; 30%), emm89.0 (n = 15; 9%), and emm12.0 (n = 14; 9%) were most prevalent. In total, 70% of emm1.0 isolates belonged to M1UK lineage. No difference in invasive infections was observed for the M1UK lineage compared with other emm1.0 isolates. However, the emm1.0 type, presence of speA1-3, speG, or speJ, as well as adulthood were significantly associated with invasive infections. In contrast, emm12.0 isolates were significantly less associated with invasive infections. Multivariable analysis confirmed a significant influence of speJ and adulthood on iGAS infections. This study underlines the importance of continuous monitoring of genomic trends and identification of emerging GAS variants. This may aid in delineating pathogenicity factors of Streptococcus pyogenes that propel invasive infections.

Effectiveness of Online Programmes for Family Carers of People with Intellectual Disabilities: Systematic Review of the International Evidence Base.

This systematic literature review examines the evidence base on the effectiveness of online programmes on the mental health and well-being of family carers of people with intellectual disabilities. Databases (ERIC, Medline, PsycINFO and CINAHL) were searched for intervention studies that considered online interventions for family carers of people with intellectual disabilities. Data were extracted using standardised data extraction tools. Bias was assessed using the Cochrane risk of bias tool for randomised trials (RoB 2). Screening, extraction and assessment of bias were completed independently by two members of the research team. Given the low number of included studies and different outcomes assessed within them, it was not possible to conduct a meta-analysis; therefore, data are presented narratively. Two studies met the criteria to be included in the review. Both studies utilised a feasibility randomised controlled trial methodology. One study found a significant decrease in parental stress, while the other found a significant increase in psychological well-being. Caution must be taken in drawing firm conclusions, given the small sample sizes and low retention rates in both studies. Online programmes seem to offer potential benefits to family carers of people with intellectual disabilities. However, further investigation is needed to examine these programmes, adopting a collaborative approach with family carers.

Employing a serious game intervention to promote adolescent school children's perceptions of nursing and midwifery professions.

AIM: To test a serious game intervention about nursing and midwifery perceptions among adolescent school children. BACKGROUND: Nursing and midwifery professions face challenges in recruitment, with persistent gender stereotypes and a lack of clarity regarding the roles contributing to this issue. This study addresses the need for innovative approaches to reshape perceptions and encourage career exploration in adolescent school children. DESIGN: Employing a pre/post-test design, this study involved 137 post-primary students aged sixteen or seventeen in the United Kingdom. METHODS: Data collection occurred between November 2022 to April 2023, involving three post-primary schools. Participants engaged with a digital serious game designed to address misconceptions and promote a more accurate understanding of nursing and midwifery. Participants completed pre- and post-intervention questionnaires, including an adapted version of the Nursing as a Career Choice Questionnaire. Statistical analyses included descriptive statistics, paired t-tests, and independent groups t-tests. RESULTS: The serious game intervention resulted in statistically significant improvements in students' perceptions across multiple domains. Overall, participants showed higher mean post-test scores (M = 139.57, SD = 15.10) compared to their mean pre-test score (M = 131.06, SD = 14.73) on the questionnaire. The domains of self-efficacy (p < .001), job prospects (p < .001) and social influences (p < .001) exhibited the most substantial positive changes. Female participants showed higher perceptions than males in pre- and post-tests and students from all-girls schools consistently scored higher than those from all-boys and mixed-gender schools. CONCLUSIONS: A serious game about the nursing and midwifery professions appears to be capable of changing perceptions of self-efficacy and job prospects related to nursing and midwifery professions. The study suggests that a serious game intervention may have the potential to change adolescent perceptions of nursing and midwifery professions which may lead to their considering of these when making future career choices.

The Experiences of Young People with Intellectual Disability, Parents and Professionals in Relationships and Sexuality Education Programmes: Findings from a Qualitative Study.

People with intellectual disability want friendships and meaningful relationships, and some want intimacy. However, the expression of sexuality is an area where potential freedoms are often limited and restricted compared to their peers. While some relationships and sexuality education programmes do exist for this population, most focus on knowledge acquisition regarding sexuality and sex but lack in their focus on relationships, informed choices and decision-making. The aim of this study was to identify good practices and methods of delivery in relationships and sexuality education for children and young people with intellectual disability. A qualitative design was undertaken. Information about our study was distributed to eight special schools in the UK. Semi-structured interviews and focus groups were employed for data collection. Data from 37 pupils with intellectual disability, 11 parents and 16 healthcare and other professionals were thematically analysed. Following data analysis, three themes emerged: (i) seeking and sharing information; (ii) protecting and keeping safe; and (iii) learning for the future. The findings highlight that pupils are keen to learn about life changes and societal influences and want reliable information. Parents and professionals recognise that children and young people with intellectual disability will develop into adults and may be vulnerable when they leave the security of the school setting. They recognise that children and young people need to know about socialising, puberty, consent and contraception. Evidence-based programmes should be designed with these stakeholders to ensure children and young people with intellectual disability receive developmentally appropriate information to make happy and safe decisions about their relationships.

Molecular Epidemiology of Underreported Emerging Zoonotic Pathogen Streptococcus suis in Europe.

Streptococcus suis, a zoonotic bacterial pathogen circulated through swine, can cause severe infections in humans. Because human S. suis infections are not notifiable in most countries, incidence is underestimated. We aimed to increase insight into the molecular epidemiology of human S. suis infections in Europe. To procure data, we surveyed 7 reference laboratories and performed a systematic review of the scientific literature. We identified 236 cases of human S. suis infection from those sources and an additional 87 by scanning gray literature. We performed whole-genome sequencing to type 46 zoonotic S. suis isolates and combined them with 28 publicly available genomes in a core-genome phylogeny. Clonal complex (CC) 1 isolates accounted for 87% of typed human infections; CC20, CC25, CC87, and CC94 also caused infections. Emergence of diverse zoonotic clades and notable severity of illness in humans support classifying S. suis infection as a notifiable condition.

Further recommendations of the International Paediatric Brain Injury Society (IPBIS) for the post-acute rehabilitation of children with acquired brain injury.

BACKGROUND: Paediatric acquired brain injury is a life-long condition which impacts on all facets of the individual's lived experience. The existing evidence base continues to expand and new fields of enquiry are established as clinicians and researchers uncover the extent of these impacts. PRIMARY OBJECTIVE: To add to recommendations described in the International Paediatric Brain Injury Society's 2016 paper on post-acute care for children with acquired brain injury and highlight new areas of enquiry. REVIEW OF INFORMATION: Recommendations were made based on the opinions of a group of experienced international clinicians and researchers who are current or past members of the board of directors of the International Paediatric Brain Injury Society. The importance of each recommendation was agreed upon by means of group consensus. OUTCOMES: This update gives new consideration to areas of study including injuries which occur in pre-school children, young people in the military, medical referral, young offenders and the use of technology in rehabilitation.

Outbreak of severe community-acquired bacterial infections among children in North Rhine-Westphalia (Germany), October to December 2022.

PURPOSE: In late 2022, a surge of severe S. pyogenes infections was reported in several European countries. This study assessed hospitalizations and disease severity of community-acquired bacterial infections with S. pyogenes, S. pneumoniae, N. meningitidis, and H. influenzae among children in North Rhine-Westphalia (NRW), Germany, during the last quarter of 2022 compared to long-term incidences. METHODS: Hospital cases due to bacterial infections between October and December 2022 were collected in a multicenter study (MC) from 59/62 (95%) children's hospitals in NRW and combined with surveillance data (2016-2023) from the national reference laboratories for streptococci, N. meningitidis, and H. influenzae. Overall and pathogen-specific incidence rates (IR) from January 2016 to March 2023 were estimated via capture-recapture analyses. Expected annual deaths from the studied pathogens were calculated from national death cause statistics. RESULTS: In the MC study, 153 cases with high overall disease severity were reported with pneumonia being most common (59%, n = 91). IRs of bacterial infections declined at the beginning of the COVID-19 pandemic and massively surged to unprecedented levels in late 2022 and early 2023 (overall hospitalizations 3.5-fold), with S. pyogenes and S. pneumoniae as main drivers (18-fold and threefold). Observed deaths during the study period exceeded the expected number for the entire year in NRW by far (7 vs. 0.9). DISCUSSION: The unprecedented peak of bacterial infections and deaths in late 2022 and early 2023 was caused mainly by S. pyogenes and S. pneumoniae. Improved precautionary measures are needed to attenuate future outbreaks.

Randomised controlled feasibility study protocol of the Carers-ID online intervention to support the mental health of family carers of people with intellectual disabilities.

BACKGROUND: Family carers play a crucial role in supporting the health and well-being of people with intellectual disabilities. Given their role and responsibilities, many family carers experience significant and ongoing stress and mental health difficulties. Programmes and interventions which provide training and support to family carers have been shown to have a positive impact on levels of stress and quality of life. However, these are often face to face which can create barriers to full participation. Online interventions have been shown to offer flexibility in delivery compared with traditional face-to-face approaches. The primary objective of this study is to determine the feasibility of delivering the Carers-ID online intervention, while the secondary outcome is improved mental health in family carers of people with intellectual disabilities. METHODS: Family carers (n = 120) will be randomised to receive the intervention (n = 60) or assigned to a wait-list control (n = 60) group. The intervention ( www.Carers-ID.com ) consists of 14 modules which cover topics including the following: promoting resilience, providing peer support, reducing anxiety, managing stress, accessing local supports and managing family conflict and information for siblings who are carers. The intervention has been co-produced with voluntary sector organisations and family carers and tested for acceptability. Primary outcomes for this study include acceptability and feasibility of the outcome measures, recruitment, participation and retention rates and effect sizes. Secondary outcomes will be completed at three time points (baseline, following intervention completion and 3 months after completion). These include the following: the Depression, Anxiety and Stress Scale, the Warwick-Edinburgh Mental Well-being Scale, the Resilience Scale and the Social Connectedness Scale Revised. Participants (n = 12) who have taken part in the intervention arm of the research will be invited to participate in semi-structured interviews as part of the process evaluation. DISCUSSION: The Carers-ID intervention provides an online resource for family carers to support their mental health and well-being and promote their resilience. It represents an affordable and accessible means of delivering such support. Testing the feasibility of the intervention and related trial procedures is required to determine whether a full-scale randomised controlled trial to evaluate the intervention's effectiveness is warranted. TRIAL REGISTRATION: ClinicalTrials.gov : NCT05737823.

The Increase in Invasive Bacterial Infections With Respiratory Transmission in Germany, 2022/2023.

BACKGROUND: In late 2022, health care institutions in Germany reported an unusual number of severe, invasive bacterial infections in association with a high incidence of viral respiratory infections. METHODS: We analyzed routine data on invasive infections due to Haemophilus influenzae, Neisseria meningitidis, Staphylococcus aureus, Streptococcus pneumoniae, and Streptococcus pyogenes (2017-2023) from a voluntary, laboratory-based surveillance system involving continuously participating facilities providing diagnostic routine data that cover approximately one-third of the German population. RESULTS: In the first quarter (Q1) of 2023, the number of invasive S. pyogenes isolates rose by 142% (n = 837 vs. mean Q1/2017-2019 = 346, 95% CI [258; 434]), while the number of H. influenzae isolates rose by 90% (n = 209 in Q1/2023 vs. mean Q1/2017-2019 = 110, 95% CI [79; 142]), compared to pre-pandemic seasonal peak values. The number of invasive S. pneumoniae isolates was high in two quarters (n = 1732 in Q4/2022 und Q1/2023). Adults aged 55 and older and children younger than 5 years were most affected by invasive H. influenzae, S. pneumoniae, and S. pyogenes infections. N. meningitidis was most commonly found in children under age 5. CONCLUSION: The reason for the marked rise in invasive bacterial infections may be an increased circulation of respiratory pathogens and elevated susceptibility in the population after relaxation of the measures taken to prevent COVID-19 infection. Coinfections with respiratory viruses may have reinforced this effect. We recommend continuous surveillance, preventive measures such as raising awareness about invasive bacterial diseases, and vaccination as recommended by the German Standing Committee on Vaccinations (STIKO).

Experiences of children and young people with attention deficit hyperactivity disorder (ADHD) during COVID-19 pandemic and lockdown restrictions.

PURPOSE: To explore the experiences of children and young people (CYP) with attention deficit hyperactivity disorder during the COVID-19 pandemic and lock down restrictions. METHODS: Semi-structured, online interviews were conducted with 17 children and young people from the UK, Northern Ireland, aged 10-14 years with ADHD. Over half the participants had a co-existing diagnosis, such as autism spectrum disorder. Interviews were recorded and transcribed verbatim before being subjected to thematic analysis. RESULTS: Four themes were identified; the emotional impact of the pandemic, adjustments to daily living, impact of remote learning and the effect on relationships. Many CYP citied feelings of sadness, loneliness and anxiety, others found the reduction in social demands favourable. CONCLUSIONS: As one of few studies to capture the experiences of children and young people with ADHD during the COVID-19 pandemic, this research highlights the potential negative long-term impact on emotional welfare, schooling and relationships.Implications for rehabilitationHealth care professionals should be aware of the overall impact on health and well-being for children and young people with ADHD following the COVID-19 pandemic and lockdown restrictions to ensure that the effect of these are minimised and managed in the future.Educators and clinicians should be cognisant of the long term consequences of poor mental health during the COVID-19 pandemic and should put in place pro-active strategies to support children and young people with ADHD.Children and young people with ADHD may suffer greatly from reduced access to sports and leisure facilities. Policy makers should be conscious of the potential negative consequences of placing limitations on access to such facilities.

Allied health professional support for children and young adults living in and leaving care: A systematic scoping review.

BACKGROUND: Children and young people living in and leaving care are known to have experienced significant childhood adversity and trauma resulting in potentially deleterious impact on their health and well-being across the life course. Studies point to the complex needs of this population who may benefit from allied health professional (AHP)-related support with limited studies located. This review sought to address this gap by systematically scoping empirical literature focused on the provision of AHP support to this cohort of children and young adults to assist an understanding of the service needs for this vulnerable population. METHODS: This scoping review followed Arskey and O'Malley's five steps framework (2005) to identify and review relevant literature. A focus on identifying the evidence, challenges and gaps in research relating to AHP support for children and young people living in and leaving care was initially agreed, followed by a systematic search using a combination of three key concepts to identify relevant studies in five AHP disciplinary areas to identify best evidence in the past decade (2011-2021). Study inclusion criteria were based on empirical studies of children and young people living in care (0-17 years) and leaving care (18-25 years). A data extraction table was formulated as a means of charting the data, aligned with the scope and objectives of this review. Finally, data were subsequently collated, synthesised and reported based on key thematic areas emerging from included studies regarding AHP support to children and young people living in and leaving care. RESULTS: A total of 13 studies met the review inclusion criteria. Included studies reported specifically on speech and language therapist (SLT; n = 5), occupational therapist (OT; n = 3) and arts-based therapies (n = 5). No studies were identified with regard to the use of physiotherapy and dietetics with this population. Results indicated that children and young people living in and leaving care have high rates of speech, language, communication and sensory needs. More rigorous screening, assessment and early intervention were identified as essential for this vulnerable group. Increased multidisciplinary collaboration and OT support for young adults in preparation for transition to independent living was identified as an urgent requirement. Included studies indicate promising results in relation to access to arts-based therapies with particular reference to identity formation for children and young people living in and leaving care. CONCLUSIONS: Although evidence of effectiveness remains limited, AHP service provision (specifically speech and language therapy, occupational therapy and arts-based therapies) has the potential to contribute positively to addressing the complex and interacting needs of this vulnerable population. As a result, it is recommended that AHP service provision is integrated into the collaborative, multidisciplinary care available to children living in and leaving care. More extensive, higher quality research related to the benefits of AHP provision for this population of children and young people is essential to provide a more robust evidence base across the various professional disciplines that constitute allied health provision.

Experiences of UK and Irish family carers of people with profound and multiple intellectual disabilities during the COVID-19 pandemic.

BACKGROUND: People with profound and multiple intellectual disabilities (PMID) have high and intensive support needs that ordinarily place significant strain on family carers. This was further heightened by the removal of many external supports during the COVID-19 pandemic. We sought to explore the experiences of family carers of people with PMID during the COVID-19 pandemic and understand what the longer-term impact might be on their lives. METHODS: Focus group interviews (n = 32) were conducted with family carers (n = 126) from the four countries of the UK and the Republic of Ireland. Participants were asked questions relating to their experiences of the COVID-19 pandemic, coping strategies, and challenges faced. All focus groups were conducted using the online platform, Zoom. These were audio recorded, transcribed verbatim and analysed employing inductive thematic analysis. FINDINGS: Three main themes were generated from the data including (1.0) COVID-19 as a double-edged sword (2.0), The struggle for support (3.0), Constant nature of caring. These included 11 subthemes. (1.1) 'COVID-19 as a catalyst for change', (1.2) 'Challenges during COVID-19: dealing with change', (1.3) 'Challenges during COVID-19: fear of COVID-19', (1.4); 'The online environment: the new normal' (2.1) 'Invisibility of male carers', (2.2) 'Carers supporting carers', (2.3) 'The only service you get is lip service: non-existent services', (2.4); 'Knowing your rights' (3.1) 'Emotional response to the caring role: Feeling devalued', (3.2) 'Emotional response to the caring role: Desperation of caring', (3.3) 'Multiple demands of the caring role.' CONCLUSIONS: The COVID-19 pandemic presented immense challenges to family carers of people with PMID but also provided some opportunities. Families had already struggled to receive many of the supports and services to which they were entitled to only to have these removed at the onset of the pandemic. The experiences of male carers have been largely absent from the literature with this research showing they want to be included in decision making and require tailored support services. Service providers should see the end of the COVID-19 pandemic as providing opportunity to re-examine current provision and design services with family carers. As the direct threat from COVID-19 diminishes and the experiences of those who lived through this period come to the fore, there is a need to re-examine current models and provision of support to family carers to better meet their needs.

Potential Impact of Higher-Valency Pneumococcal Conjugate Vaccines Among Adults in Different Localities in Germany.

Next-generation pneumococcal conjugate vaccines (PCVs) have been approved for use. The serotype distribution of pneumococcal isolates can vary between regions. To understand the potential impacts of new PCVs, we evaluated trends in invasive pneumococcal disease (IPD) among adults in Germany at a local level using Bayesian hierarchical logistic regression. There was little spatial variation in IPD cases caused by PCV13 serotypes, which dropped from 60% of IPD cases in 2006 to 30% in 2018. Over half of IPD cases in 2018 were attributable to serotypes covered by new PCVs (PCV15, PCV20), which suggests they could further reduce the burden of IPD.

Exploring Resilience in Care Home Nurses: An Online Survey.

Resilience is considered a core capability for nurses in managing workplace challenges and adversity. The COVID-19 pandemic has brought care homes into the public consciousness; yet, little is known about the resilience of care home nurses and the attributes required to positively adapt in a job where pressure lies with individuals to affect whole systems. To address this gap, an online survey was undertaken to explore the levels of resilience and potential influencing factors in a sample of care home nurses in Northern Ireland between January and April 2022. The survey included the Connor-Davidson Resilience Scale, demographic questions and items relating to nursing practice and care home characteristics. Mean differences and key predictors of higher resilience were explored through statistical analysis. A moderate level of resilience was reported among the participants (n = 56). The key predictors of increased resilience were older age and higher levels of education. The pandemic has exposed systemic weakness but also the strengths and untapped potential of the care home sector. By linking the individual, family, community and organisation, care home nurses may have developed unique attributes, which could be explored and nurtured. With tailored support, which capitalises on assets, they can influence a much needed culture change, which ensures the contribution of this sector to society is recognised and valued.

Social workers and acquired brain injury: A systematic review of the current evidence-base.

Social work plays an important role in the assessment and treatment of people with acquired brain injury. Acquired brain injury is a complex and highly prevalent condition which can impact on cognitive, emotional and social domains. As acquired brain injury is a hidden disability it can be misdiagnosed or classified as another condition entirely. We sought to systematically explore the evidence base to examine how social workers have been prepared to work with their clients with brain injury. Employing six electronic databases (Social Policy & Practice, Web of Science, Scopus, PubMed, PsycINFO, CINAHL Plus) we reviewed 1071 papers. After applying eligibility criteria 17 papers were included in this review. We utilised standardised data extraction and quality appraisal tools to assess all included papers. Following appraisal, 9 papers were judged as possessing high methodological quality whilst 8 were judged as medium. Employing narrative synthesis, we identified four themes which captured the key findings of these papers. Themes were named as (i) advocacy and social work (ii) training and multidisciplinary team working (iii) inclusion of social networks and (iv) societal barriers. In order to meet their statutory responsibilities to practice safely, social workers must receive training in how to identify ABI and develop understanding of its consequences and subsequent need for provision. Social workers are also in a unique position to advocate for their clients and should make every effort to ensure their needs are met.

A simple PCR assay for the identification of the novel Streptococcus pneumoniae serotype 7D.

The identification of the novel pneumococcal serotype 7D by Neufeld quellung reaction requires significant expertise. To circumvent this, we developed a simple serotype-specific PCR method to discriminate serotype 7D from the closely related serotypes 7C, 7B and 40. The established PCR was validated with the strain collection of the German National Reference Center for Streptococci (GNRCS). However, no isolate initially assigned as serotype 7B, 7C or 40 was identified as serotype 7D.

Social participation in adults with cerebral palsy: a systematic review of the evidence-base.

PURPOSE: To identify and synthesise the current evidence on social participation in adults with cerebral palsy (CP). METHODS: Four databases (PubMed, CINAHL Plus, PsycINFO, Web of Science) were systematically searched between December 2021 and February 2022. Pre-specified eligibility criteria were applied to all identified studies resulting in the inclusion of 16 articles. Data extraction was performed using a standardised tool and quality appraisal was assessed using the Mixed Methods Appraisal Tool. A narrative synthesis approach was taken for data analysis. RESULTS: The 16 included studies were rated as high (n = 11) and medium quality (n = 5). Numbers of participants included in the studies ranged from 7 to 335. Definitions of social participation were discussed. Common themes were identified: the impact of home and work environments on social participation, the importance of age-appropriate support and interventions, and the impact of limited autonomy on social participation. CONCLUSIONS: Adults with CP experience limited social participation due to lack of appropriate support in childhood, issues across the lifespan including physical limitations when ageing, and factors such as societal expectations and inaccessible environments which limit opportunities for autonomy. Social participation may be improved by supporting families to provide opportunities in childhood, providing timely interventions, and by enhancing autonomy.

Considering the support needs of the wider family, in order to build a supportive family environment in childhood, could improve social participation opportunities for individuals with cerebral palsy (CP) in adulthood.Social participation in adulthood may be improved by encouraging independence and autonomy in childhood and adolescence.Taking a lifespan approach to services for individuals with CP could improve social participation and better prepare them for the challenges of adulthood.

Antibody responses after sequential vaccination with PCV13 and PPSV23 in kidney transplant recipients.

PURPOSE: Vaccination against Streptococcus pneumoniae is recommended in transplant recipients to reduce the morbidity and mortality from invasive pneumococcal disease. Previous studies indicate that transplant recipients can produce specific antibodies after vaccination with the 13-valent pneumococcal conjugate vaccine Prevenar 13 (PCV13) or the pneumococcal polysaccharide vaccine Pneumovax 23 (PPSV23). National guidelines recommend sequential vaccination with PCV13 followed by PPSV23 in kidney transplant patients. However, there are currently no data on the serological response in kidney transplant recipients, who received a sequential vaccination with PCV13 and PPSV23. METHODS: In the current study, we sequentially vaccinated 46 kidney transplant recipients with PCV13 and PPSV23 and determined global and serotype-specific anti-pneumococcal antibody responses in the year following vaccination. RESULTS: Serotype-specific and global anti-pneumococcal antibody concentrations were significantly higher compared to baseline. We observed that serotype-specific antibody responses varied by serotype (between 2.2- and 2.9-fold increase after 12 months). The strongest responses after 12 months were detected against the serotypes 9N (2.9-fold increase) and 14 (2.8-fold increase). Global antibody responses also varied with respect to immunoglobulin class. IgG2 revealed the highest increase (2.7-fold), IgM the lowest (1.7-fold). Sequential vaccination with both vaccines achieved higher antibody levels in comparison with a historical cohort studied at our institute, that was vaccinated with PCV13 alone. During the 12-months follow-up period, none of the patients developed pneumococcal-associated pneumonia or vaccination-related allograft rejection. CONCLUSION: In conclusion, we strongly recommend sequential vaccination over single immunization in kidney transplant recipients.

Uncovering the link between the SpnIII restriction modification system and LuxS in Streptococcus pneumoniae meningitis isolates.

Streptococcus pneumoniae is capable of randomly switching their genomic DNA methylation pattern between six distinct bacterial subpopulations (A-F) via recombination of a type 1 restriction-modification locus, spnIII. These pneumococcal subpopulations exhibit phenotypic changes which favor carriage or invasive disease. In particular, the spnIIIB allele has been associated with increased nasopharyngeal carriage and the downregulation of the luxS gene. The LuxS/AI-2 QS system represent a universal language for bacteria and has been linked to virulence and biofilm formation in S. pneumoniae. In this work, we have explored the link between spnIII alleles, the luxS gene and virulence in two clinical pneumococcal isolates from the blood and cerebrospinal fluid (CSF) of one pediatric meningitis patient. The blood and CSF strains showed different virulence profiles in mice. Analysis of the spnIII system of these strains recovered from the murine nasopharynx showed that the system switched to different alleles commensurate with the initial source of the isolate. Of note, the blood strain showed high expression of spnIIIB allele, previously linked with less LuxS protein production. Importantly, strains with deleted luxS displayed different phenotypic profiles compared to the wildtype, but similar to the strains recovered from the nasopharynx of infected mice. This study used clinically relevant S. pneumoniae strains to demonstrate that the regulatory network between luxS and the type 1 restriction-modification system play a key role in infections and may support different adaptation to specific host niches.

Epidemiological and Clinical Features of Streptococcus dysgalactiae ssp. equisimilis stG62647 and Other emm Types in Germany.

(1) Background: Streptococcus dysgalactiae subspecies equisimilis (SDSE) is an important ß-hemolytic pathogen historically described as mainly affecting animals. Studies epidemiologically assessing the pathogenicity in the human population in Germany are rare. (2) Methods: the present study combines national surveillance data from 2010 to 2022 with a single-center clinical study conducted from 2016 to 2022, focusing on emm type, Lancefield antigen, antimicrobial resistance, patient characteristics, disease severity, and clinical infection markers. (3) Results: The nationwide reported invasive SDSE infections suggest an increasing infection burden for the German population. One particular emm type, stG62647, increased over the study period, being the dominant type in both study cohorts, suggesting a mutation-driven outbreak of a virulent clone. The patient data show that men were more affected than women, although in the single-center cohort, this trend was reversed for patients with stG62647 SDSE. Men affected by stG62647 developed predominantly fascial infections, whereas women suffering from superficial and fascial non-stG62647 SDSE infections were significantly younger than other patients. Increasing age was a general risk factor for invasive SDSE infections. (4) Conclusions: further studies are needed to further elucidate the raised questions regarding outbreak origin, underlying molecular mechanisms as well as sex-dependent pathogen adaptation.