Higher Risk Of Hospitalization Research Articles

Characteristics of the pregnancy and labour course in women who underwent COVID-19 during pregnancy.

This study aims to analyze the impact of COVID-19 on pregnancy and labor, focusing on its effects on maternal and child health. The research explores the relationships between coronavirus infection and clinical and laboratory parameters, as well as the risks of pregnancy complications and adverse birth outcomes. The study involved 60 pregnant women diagnosed with COVID-19. A comprehensive evaluation of clinical and laboratory indicators was conducted, employing correlation, regression, logistic analyses to determine risk factors. There was a strong inverse correlation between carbon dioxide levels and haematocrit (-0.76), and a direct correlation between blood pH and partial pressure of oxygen (0.73). COVID-19 was associated with increased risks of preterm labor (OR=1.82), stillbirth (OR=2.11), pre-eclampsia (OR=1.46), and foetal distress. Multivariate analysis revealed a 200 g reduction in neonatal birth weight and higher risks of hospitalisation (OR=1.8), postpartum hemorrhage (OR=2.3), and preterm delivery (OR=2.5). Comorbid conditions such as cardiovascular abnormalities, diabetes, obesity, thrombophilias exacerbated the risks of complications, including pre-eclampsia, neonatal respiratory distress syndrome, venous thromboembolism. COVID-19 infection increases the likelihood of pregnancy complications and adverse outcomes, especially in women with comorbidities. These findings highlight the need for preventive strategies and risk management protocols for pregnant women during future outbreaks, emphasizing the importance of further research in this field.

Evaluating Disparities in COVID-19 Clinical Outcomes Among Patients With Cirrhosis in North America and Europe-An International Registry Study.

Patients with decompensated cirrhosis have a higher risk of hospitalization, ICU admission, and death from COVID-19. The impact of demographics on these outcomes remains uncertain. The SECURE-Liver and COVID-Hep databases were utilized to evaluate disparities in COVID-19 outcomes. Patients were stratified by North American and European cohorts. Bivariate and multivariable logistic regression was performed. A total of 718 cirrhosis patients with COVID-19 were evaluated. In the North American cohort, Black patients had more comorbidities (CI: 1.86 vs. 1.83, p < 0.01), higher rates of hospitalization (77% vs. 85%, p < 0.01), ICU admission (27% vs. 40%, p = 0.05), and death (18% vs. 28%, p = 0.07). Hispanic patients had the lowest adverse outcome rates. In the European cohort, White patients had more comorbidities (CI; 1.63 vs. 1.31, p = 0.02), but non-White patients had higher hospitalization rates (82% vs. 67%, p = 0.01), ICU admissions (15% vs. 18%, p = 0.04), and lower mortality rates (28% vs. 34%, p = 0.01). Black patients in North America had higher hospitalization, ICU admission, and death rates. In the European subgroup, White patients had higher death rates than non-White patients. These disparities became statistically insignificant after adjusting for confounders, suggesting that non-liver-related comorbidities might increase the risk of adverse outcomes.

Clinical Outcomes in Atrial Fibrillation Patients Undergoing Transcatheter Aortic Valve Replacement With Contemporary Devices.

Atrial fibrillation (AF) has been identified as a marker of advanced cardiac damage in aortic stenosis patients. However, the factors associated with poorer outcomes among AF patients in contemporary TAVR practice, particularly regarding mortality and heart failure (HF)-related hospitalizations, remain largely unknown. Multicenter study including consecutive patients with a history of AF, evaluating the clinical outcomes and predictors of mortality, and HF-related hospitalization, who underwent TAVR with newer-generation devices using balloon or self-expandable valves. A total of 3,476 patients were included. After a median follow-up of 2 (1-4) years, 36.4% had died, with 51.5% of deaths being cardiovascular-related, including 15.6% from HF. HF-related hospitalizations post-TAVR accounted for 34.8% of all hospitalizations and exhibited a significantly higher mortality risk (HR:1.54;95%CI:1.32-1.81;P<0.001). Permanent AF emerged as an independent predictor of all-cause death or HF-related hospitalizations (HR:1.25; 95%CI:1.10-1.40;P<0.001), as did other baseline characteristics, including chronic kidney disease (HR:1.23;95%CI:1.09-1.38;P=0.001), anemia (HR:1.21; 95%CI:1.07-1.36;P=0.002), and New York Heart Association class III or IV (HR:1.13; 95%CI:1.01-1.27;P=0.045). Additionally, early post-procedural complications, including stroke and bleeding also significantly increased the risk of mortality and HF-related hospitalizations (HR:5.52;95%CI:3.12-9.79;P<0.001 & HR:1.17;95%CI:1.03-1.33;P=0.014, respectively). AF patients exhibited a high risk of HF-related hospitalizations in a contemporary TAVR cohort. Several baseline co-morbidities and periprocedural complications, along with permanent (vs. paroxysmal) AF were associated with poorer outcomes. These findings confirm the negative impact of AF despite the continued improvements in TAVR technology and underscore the importance of early intervention and optimization of HF management to improve outcomes in this high-risk population.

Respiratory Syncytial Virus associated hospitalisations in children up to 6 years of age in Italy: a systematic review.

Respiratory syncytial virus is a leading cause of respiratory hospitalisations in infants. This systematic review (registration number: CRD42021248309) aims to synthesise the available evidence on Respiratory Syncytial Virus-related hospitalisations among children aged 0 to 6 years in Italy. The literature search was conducted on PubMed, Embase, Scopus, and International HTA, covering the period from January 2000 to July 2022, with a focus on studies that reported information on Respiratory Syncytial Virus-associated hospitalisation in children aged 0-6 years in Italy. Eight articles were included after screening 20,845 records. These retrospective studies reported that most hospitalisations were among those <1 year (71.5%-88.8%), infants aged <1 year were also at higher risk of hospitalisation in intensive care unit. Respiratory Syncytial Virus infections typically peaked December-February, with an atypical early start in August 2021. Subtype analysis showed alternating prevalence of Respiratory Syncytial Virus-A and Respiratory Syncytial Virus-B across different seasons. Coinfections were not uncommon (1.1%-37.4%), with rhinovirus and bocavirus being the most frequent. All infants at their first Respiratory Syncytial Virus season showed an increased risk of severe infection and hospitalisation, regardless of the gestational age at birth, compared to older participants. This systematic review will enrich the understanding about Respiratory Syncytial Virus disease and help support decisions regarding prevention efforts in Italy.

Home Mechanical Ventilation and Risk of Hospitalization in Obesity Hypoventilation Syndrome - The Population-based DISCOVERY Study.

Patients with obesity hypoventilation syndrome (OHS) have high risk of hospitalization, which might be decreased by home mechanical ventilation (HMV). To evaluate annualized hospitalization rate (AHR) and change in AHR in patients with OHS starting home mechanical ventilation (HMV), and explore if there were any difference in AHR by starting HMV acutely or electively. Population-based longitudinal study of patients with OHS starting HMV in the Swedish DISCOVERY cohort between 1996 and 2018, cross-linked with the National Patient Registry for national data on hospital admissions. AHR was calculated for each patient for three years before (Year -3, -2, -1) and three years after (Year 1, 2, 3) the year of starting HMV (Year 0; start date ± 6 months). Differences in AHR were analyzed using Wilcoxon signed-rank test (between years) and Mann-Whitney U test (between acute/elective). Proportion of patients hospitalized in each year was analyzed and comparison between years was done with McNemar´s test. Factors associated with change in AHR were identified using multivariate linear regression models. In total, 2,445 patients were included: 47% females, mean age 62.3 ± 12.2 years, and 1,418 (58%) started HMV electively. Overall, AHR decreased with 0.88 (95%CI 0.74-1.02) hospitalization/year after start of HMV and starting treatment acutely was associated with greater decrease in AHR. There was no statistically significant difference in AHR in Year 1 between acute and elective start (P=0.199). The year after start of HMV, proportion of patients hospitalized decreased from 84% to 54% (P<0.05). Initiation of HMV was associated with reduced hospitalization rate in patients with OHS, irrespective of acute or elective start. Majority of patients with OHS are hospitalized in the year of HMV initiation.

HFpEF is associated with a higher risk of hospitalization or death in men undergoing transcatheter edge-to-edge tricuspid valve repair

Abstract Aims There are fundamental differences between women and men regarding the pathophysiology and etiology of tricuspid regurgitation (TR) as well as underlying comorbidities. The aim of this study was to analyze differences between female and male patients undergoing transcatheter edge-to-edge tricuspid valve repair for TR (T-TEER) and to identify gender-specific predictors of adverse outcome. Methods and Results In this monocentric study 197 consecutive patients (96 women and 101 men) undergoing T-TEER at our university heart center were included. Prevalence of heart failure with preserved ejection (HFpEF) was higher in women than in men (63% vs. 37.3%; p=0.001) whereas men more often had heart failure with reduced ejection fraction (HFrEF; 62.7% vs. 37%; p=0.001). Women had more severe symptoms (86.2% in New York Heart Association (NYHA) class III-IV vs. 72.3% in men; p=0.022). Device success rates (p=0.64), procedural characteristics (e.g. number of clips, p=0.17) and postprocedural results (TR grade post clip, p=0.1) were comparable. One-year mortality did not differ between genders (5.9% in women, 8.6% in men; p=0.53). Likewise, no significant difference could be found with regard to heart failure hospitalizations within one year after T-TEER (20.3% in women, 18.8% in men, p=0.82). Strikingly, prevalence of HFpEF was substantially higher than of HFrEF in men that reached the combined endpoint of one-year mortality or rehospitalization for heart failure (61.5% vs. 38.5%; p = 0.08). In women, no relevant difference could be found (27.0% vs. 32.4%; p=0,623). To identify gender-specific predictors of the combined endpoint, a cox regression analysis was performed. In men, HFpEF emerged as an independent predictor (HR 2.703; 95% CI 1.069 – 6.837; p = 0.036). In women, NYHA functional class proved to be an independent risk factor (Hazard Ratio (HR) 3.362; 95% confidence interval (CI) 1.085 – 10.415; p=0.036) for the combined endpoint whereas HFpEF was not associated with adverse outcome (HR 0.865, 95% CI 0.259 – 2.885, p=0.81). Conclusions Women undergoing T-TEER were more symptomatic and had higher prevalence of HFpEF compared to men. Nevertheless, HFpEF emerged as an independent predictor of the combined endpoint of one-year mortality or rehospitalization for heart failure only in men. NYHA functional class independently predicted adverse outcome in women.

Risk Profiles of Avoidable and Unavoidable Hospitalizations: a Swedish population-based study

Abstract Background Older adults frequently experience multiple hospitalizations, owing to their complex health and social needs. This study aims to comprehensively characterize the risk factors associated with avoidable and unavoidable hospitalization among older adults. Specific emphasis is placed on avoidable/unavoidable hospitalization originating from chronic or acute causes. Methods Data on 3,166 individuals aged ≥60 years were obtained from the Swedish National Study on Aging and Care in Kungsholmen (SNAC-K), linked to the Swedish National Patient Register. Multistate models were used to investigate the risk profiles of participants experiencing their first and recurrent hospitalizations over 15 years. The Swedish National Board of Health and Welfare criteria were used to define avoidable/unavoidable hospitalizations. Results Women had a lower hazard of avoidable hospitalizations for chronic conditions as well as unavoidable hospitalizations (HR range 0.46-0.84). However, receiving informal care was associated with 88% increased hazard of avoidable hospitalizations due to chronic causes (95%CI 1.18-2.99), while receiving formal care was associated with 44% increasing hazard of avoidable hospitalization due to acute causes (95%CI1.04-1.98). Factors such as slow walking speed, multimorbidity, and polypharmacy were associated with a high risk of avoidable hospitalizations due to both acute (HR range1.27-3.03) and chronic (HR range1.63-2.54) causes. Conclusions Both clinical and functional factors have emerged as key predictors of avoidable hospitalization, underscoring the importance of comprehensive risk assessment and proactive healthcare management strategies to reduce the burden of hospital utilization in older adults. Key messages • Targeted interventions are essential to improve healthcare outcomes among older adults at risk of avoidable hospitalizations due to chronic and acute conditions. • The study identified predictors such as slow walking speed, multimorbidity, and polypharmacy, underscoring the need for comprehensive risk assessment to prevent avoidable hospitalization.

Association between heat exposure and Kawasaki disease: A time-stratified case-crossover study

Nationwide studies investigating the association between daily mean temperature and Kawasaki disease are lacking. This study aimed to examine the association between ambient temperature and Kawasaki disease by utilizing daily data from nationwide administrative claims databases. The daily number of Kawasaki disease patients younger than 15 years old, who were hospitalized from 2011 to 2022, was extracted from the nationwide administrative claims database of hospitalizations in Japan. Daily mean temperature data and relative humidity data were obtained from the Japan Meteorological Agency. Since the exposure of interest includes heat, hospitalizations during the five warmest months (May through September) were used for analysis. A time-stratified case-crossover study with conditional quasi-Poisson regression analysis was used to estimate the relative risk (RR) of weather exposure for Kawasaki disease hospitalization with a lag of 0–5 days by prefecture. Relative humidity was included in the model simultaneously to control for its potential confounding effect. Random-effects meta-analysis was used to estimate pooled RRs. There was a total of 48,784 cases of Kawasaki disease hospitalization during the study period, of which 87.9% were under 5 years of age. Exposure to high daily mean temperatures was associated with an increased risk of hospitalization for Kawasaki disease. Specifically, exposure to extreme high daily mean temperatures (99th percentile high temperature) was associated with higher risk of hospitalization by 33% (RR 1.33, 95% confidence interval (CI):1.08, 1.65). Similar results were obtained from sensitivity analysis. Future research should elucidate the mechanisms by which high temperature is associated with hospitalization for Kawasaki disease.

Demographic, Social, Behavioral, and Clinical Characteristics Associated with Long-Term Opioid Therapy and Any Opioid Prescription in High-Risk VA Patients.

Social risks (individual social and economic conditions) have been implicated as playing a major role in the opioid epidemic and may be more prevalent in the most medically vulnerable patients. However, the extent to which specific social risks and other patient factors are associated with opioid use among high-risk patients has not been comprehensively assessed. To identify patient-reported and electronic health record (EHR)-derived demographic, social, behavioral/psychological, and clinical characteristics associated with opioid use in Veterans Affairs (VA) patients at high risk for hospitalization or death. We used generalized estimating equations to calculate the probability of long-term opioid therapy (LTOT) and the probability of filling any opioid prescription (regardless of duration) over five intervals during a 4-year period (12/2016-12/2020). Prospective cohort of 4121 medically high-risk VA patients not receiving palliative or end-of-life care, and who responded to a survey mailed to a nationally representative sample of 10,000 high-risk VA patients. Patient-reported demographic, social risk, behavioral/psychological, and clinical measures, and linked EHR-derived data. The average age was 69.8years, 6.7% were female, and 17.5% were Non-Hispanic Black race/ethnicity. The majority had diagnosed chronic pain (76.1%). LTOT and any opioid prescription were positively associated with the following: younger age, non-Hispanic White race/ethnicity (compared to non-Hispanic Black race/ethnicity), male sex assigned at birth (LTOT only), not being currently employed, current tobacco use, no alcohol use, higher grit (any opioid prescription only), functional limitations, diagnosed chronic pain, lower comorbidity burden (LTOT only), obesity class I or class II/III (any opioid prescription only), undergoing surgery (any opioid prescription only), and diagnosed cancer (any opioid prescription only). Multifactor screening could help identify individuals at elevated risk for adverse opioid-related outcomes and augment current multifaceted initiatives, as several social risks and patient characteristics were predictors of LTOT and any opioid prescription.

Physical Activity and Acute Care Utilization Among Older Adults With Mild Cognitive Impairment and Dementia.

People living with dementia have high rates of hospitalizations. Identifying factors that influence hospitalization is important. This study examines the influence of physical activity levels on risk of hospitalization and emergency department (ED) use among older people living with mild cognitive impairment (MCI) or dementia followed in our primary care practice in Rochester, Minnesota, United States. We included those age 55 years and older, who had a clinic visit between June 1, 2019 and June 30, 2021 and completed a social determinants of health questionnaire about physical activity levels (n = 3090). Physical activity was classified as sufficiently active, insufficiently active, or physically inactive. Risk of hospitalization and ED visits by physical activity levels were examined. People who were physically inactive were at higher risk of hospitalization and ED visits (p < .001) compared with those who were sufficiently active. This highlights an area for health promotion in people living with MCI and dementia.

Prediction of 90-day mortality risk after unplanned emergency department visits of advanced stage cancer patients

PurposeCancer represents the leading cause of mortality in high-income countries. In the last years, the rate of emergency department (ED) visits by cancer patients has increased 5.5-fold. These ED visits impose a significant economic burden and may indicate the progression of the oncologic disease. The goal of this retrospective study was to identify patient-derived risk factors, especially focusing on serum albumin and body mass index (BMI) for 90-day mortality following unplanned ED visits by cancer patients.MethodsA retrospective chart review of all patients with an ICD-10 diagnosis for cancer undergoing palliative treatment presenting at the ED between 2016 and 2018 at the General Hospital of Vienna was performed. Laboratory values, emergency severity index (ESI), and BMI were collected at the ED presentation. 90-day mortality (90MM) was calculated from the ED presentation.ResultsA total of 448 cancer patients were included. Lung cancer (19.2%) and pancreaticobiliary cancer (15.6%) were the most frequent diagnoses. The main reasons for ED visits were pain (20.5%) and fever (17.4%). Sixty-nine percent of patients had to be admitted and 17.5% of patients died during hospitalization. 90MM was highest for patients with low albumin (< 35 g/L vs. > 35 g/L: 60.4% vs. 31.4%; p < .0001). When incorporating albumin levels and BMI, patients with both values below the cutoff had the highest risk for death (HR 4.01, 95% CI 2.30–7.02).ConclusionCancer patients face a high risk for hospitalization when presenting at the ED. The 90MM rate is highest in patients with low BMI and albumin levels. This highlights an especially vulnerable cohort of cancer patients for whom supportive care and palliative care have to be optimized.

A fair individualized polysocial risk score for identifying increased social risk in type 2 diabetes.

Racial and ethnic minorities bear a disproportionate burden of type 2 diabetes (T2D) and its complications, with social determinants of health (SDoH) recognized as key drivers of these disparities. Implementing efficient and effective social needs management strategies is crucial. We propose a machine learning analytic pipeline to calculate the individualized polysocial risk score (iPsRS), which can identify T2D patients at high social risk for hospitalization, incorporating explainable AI techniques and algorithmic fairness optimization. We use electronic health records (EHR) data from T2D patients in the University of Florida Health Integrated Data Repository, incorporating both contextual SDoH (e.g., neighborhood deprivation) and person-level SDoH (e.g., housing instability). After fairness optimization across racial and ethnic groups, the iPsRS achieved a C statistic of 0.71 in predicting 1-year hospitalization. Our iPsRS can fairly and accurately screen patients with T2D who are at increased social risk for hospitalization.

Respiratory syncytial virus: an overview of clinical manifestations and management in the Indian pediatric population.

Respiratory syncytial virus (RSV) plays a major part in causing lower respiratory tract infections in younger populations, especially in infants and pediatric patients, causing a higher rate of morbidity and mortality in the respective population, affecting 60% of the population globally. Typically, identifying the virus in the patient's respiratory secretions is important for laboratory validation of a clinically suspected RSV infection. Unfortunately, the only available preventive measure to lower the incidence for infants who are at high risk of RSV-induced hospitalization is palivizumab prophylaxis. Treatment strategies to manage RSV involve using an antiviral drug that is Ribavirin along with bronchodilators, nebulized adrenaline (epinephrine), and nebulized hypertonic saline. Providing patients with alternative treatment options like vitamin D-cathelicidin as well as probiotics and prebiotics can help reduce the intensity of the infection. This review article focuses on the epidemiology, clinical manifestation, prophylaxis, and available treatment options for RSV infections in infants, children, and young adults.

Incidence and Risk of Coronavirus Disease 2019 Hospitalization Among Unvaccinated Children.

The aim of this study is to determine the incidence and risk factors associated with COVID-19 hospitalization among unvaccinated children. Children aged 0- < 18 years, members of Kaiser Permanente Northern California (KPNC), were followed from March 1, 2020, until the earliest occurrence of: chart-confirmed COVID-19 hospitalization, disenrollment from KPNC, age 18 years, receipt of COVID-19 vaccine, death, or study end (December 31, 2022). We calculated the incidence rate of hospitalization by SARS-CoV-2 variant period and by age group. We determined risk factors for hospitalization using Poisson regression. We also conducted descriptive analyses of hospitalized cases. Among 1,107,799 children, 423 were hospitalized for COVID-19 during follow-up. The incidence of hospitalization increased with each new SARS-CoV-2 variant and was highest among children aged < 6 months. Among the < 6-month-olds, the incidence rate per 100,000 person-months was 7 during predelta, 13.3 during delta, and 22.4 during omicron. Black (RR = 2.05, 95% CI: 1.33-3.16) and Hispanic children (RR = 1.82, 95% CI: 1.34-2.46) and children with any comorbidities were at high risk of hospitalization (RR = 3.81, 95% CI: 2.94-4.95). Overall, 20.3% of hospitalized children were admitted to an intensive care unit (ICU), but ICU admission was 36.1% among 12- < 18-year-olds. The majority of ICU admits (91.8%) had no comorbidities. Children too young to be vaccinated had the highest incidence of COVID-19 hospitalization, while adolescents had the highest proportion of ICU admissions. To prevent severe disease in children and adolescents, everyone eligible should be vaccinated.

Impact on ambulatory palliative appointment lead times by standardizing scheduling protocols based on cognitive computing models.

62 Background: Although palliative care is available across the United States, access continues to remain variable. In Texas, only 52% of hospital systems have palliative services. As a result, optimizing existing systems is critical to providing timely services to this vulnerable population. The Supportive Care Services Clinic at University Health in San Antonio, TX provides ambulatory palliative services to patients including physical and psychosocial symptom management and care coordination. For the period April 1, 2023 to June 30, 2023 average lead times for new palliative patient visits (NPPV) and hospital consult discharge visits (HCDV) was 53 days and 39 days respectively. The aim of this project was to decrease the lead times for NPPV and HCDV through standardization of scheduling criteria. We hypothesized that by applying a scheduling protocol utilizing cognitive computing models (CCM) calculating readmission risk scores to prioritize referrals, we could reduce appointment lead times. Methods: During the implementation phase, we developed referral triage criteria to prioritize patients on a scheduling wait list, including patients who were at higher risk of hospitalization or rapid decline based on CCM readmission risk scores calculated within the electronic medical record. Patients were assigned to next available in template. If a cancelation occurred, patients were pulled forward and vacancy was filled based on priority score. Results: For the initial post-implementation period between September 1, 2023 and November 30, 2023 NPPV average lead time was 47 days which was a reduction of 11% from baseline. The average lead time for HCDV was 33 days which was a reduction of 15% from baseline. In a second follow-up period from February 1, 2024 to April 30, 2024, the average lead time of NPPV was 22 days, a 58% decrease from baseline. The average lead time for HCSV was 24 days which was a significant reduction (p-value = 0.011) of 38% from the pre-implementation baseline. Conclusions: Utilization of CCM risk scores to triage NPPV and HCDV significantly reduced the lead times and resulted in more timely services for critical patients. We also noted increased template utilization. Future projects aim to study the effects of scheduling protocols on template utilization, cancellation rates, no-show rates, readmission rates and other health care utilization. Palliative appointment lead times. April-June 2023 Sept-Nov 2023 Feb-Apr 2024 Total Pt Seen 292 364 534 Avg Lead Time (d) 41 38 29 New Patient New Patient New Patient Completed 66 82 74 Avg Lead Time (d) 53 47 22 Hospital Discharge Hospital Discharge Hospital Discharge Completed 27 28 25 Avg Lead Time (d) 39 33 24

The Seasonality of Childhood Bone and Joint Infection with Focus on Kingella kingae

Background: Seasonal trends in hospitalization for childhood bone and joint infection (BJI) are reported inconsistently. True seasonal variation would suggest an element of disease risk from environmental factors. This review evaluates all reported seasonal variations in childhood BJI, with additional analysis of seasonal trends for diseases secondary to Kingella kingae. Methods: A systematic review of the literature was undertaken from January 1, 1980, to August 1, 2024. Data were extracted on the hospitalization rate by season and/or month. Pathogen-specific studies for BJI secondary to K. kingae were examined separately. Results: Twenty studies met inclusion criteria encompassing 35,279 cases of childhood BJI. Most studies reported seasonal variation (n = 15, 75%). Eight studies specifically considered disease secondary to K. kingae, and all reported more frequent hospitalization in autumn and/or winter. This is in keeping with the role of respiratory pathogens and seasonal viruses in disease etiology for K. kingae BJI. Findings from other studies on the seasonality of childhood BJI were inconsistent. There were reported seasonal peaks in autumn/winter (4 studies), summer/spring (5 studies), or no variation (5 studies). Where microbiologic data were available, Staphylococcus aureus was the primary pathogen. The quality assessment demonstrated confounding and heterogeneous inclusion criteria affecting the seasonal analysis. Conclusion: For childhood BJI caused by K. kingae, there appears to be a higher risk of hospitalization in autumn and/or winter months. This may relate to the seasonal circulation of respiratory viruses. There is currently insufficient evidence to support other forms of seasonal variation. Reported findings are likely affected by regional disease and pathogen characteristics. Level of Evidence: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

COVID-19 quer durch die Berufsgruppen – Infektions-, Krankenhausaufenthalts- und ICU-Muster in einem schwedischen Bezirk

COVID-19 Across Professions – Infection, Hospitalisation, and ICU Patterns in a Swedish County The study, which will be published in the Journal of Occupational and Environmental Medicine and which has already been pre-published online in May 2024, is one of the few research projects on the links between COVID-19 and occupational activity that analysed data from all three waves of the pandemic and was able to draw on a particularly large data set (data from 22,000 people). Based on this data, the study determined the number of all positive infection reports, hospitalisations and intensive care unit admissions as well as deaths caused by COVID-19 for relevant occupational groups. Healthcare workers and other professions with frequent/close human contact had a significantly higher number of confirmed COVID-19 infections and a higher risk of hospitalisation than other occupational groups, especially in the first wave of the pandemic, even if this trend gradually weakened with each subsequent wave of the pandemic. Based on this finding, the authors of the study conclude that effective preventive protective measures should be implemented immediately at the beginning of a future pandemic wave for the groups of people and professions particularly affected by frequent and close occupational contact with people. The study’s analysis of data from a longer period of time makes it possible to better recognise changes in infection patterns over time. Keywords: COVID-19 – occupational activity – infection reports – hospitalisations admissions – deaths

Heterogeneity of SARS-CoV-2 immune responses after the nationwide Omicron wave in China.

It remains unclear how previous infections and vaccinations influenced and shaped heterogeneous immune responses against Omicron and its variants in diverse populations in China. After the national wave of Omicron in early 2023, we evaluated serum levels of neutralizing antibodies (nAbs) against Omicron (B.1.1.529) and its variants (BA.5, BF.7, and CH1.1) in 33 COVID-19 convalescents and 40 uninfected vaccinees, using vesicular stomatitis virus-based pseudovirus neutralizing assay. In addition, we followed 34 Delta convalescent patients to compare their immune responses against Omicron before (late 2021) and after the Omicron wave (early 2023). NAbs at the acute phase of the disease were investigated in 50 Omicron inpatients, including 24 vaccinated and 26 unvaccinated patients. Among them, nasal mucosal IgA levels were measured in 42 subjects. Compared to vaccination, breakthrough infections significantly increased the breadth and magnitude of serum nAbs and mucosal IgA levels against Omicron variants. Exposure to Omicron but not Delta elicited stronger pan-Omicron responses. In Omicron inpatients, nAbs continued to rise as vaccination doses increased. However, in both vaccinees and convalescents, a fourth dose vaccination did not elicit higher nAbs against Omicron. Furthermore, nAbs against Omicron variants lasted longer than nAbs against WT SARS-CoV-2. Breakthrough infections of Omicron variants elicited specific immune responses against Omicron compared to vaccination and Delta infection. Although repeated vaccination revealed limited impacts on serum nAbs, populations at high risk of hospitalization may still benefit from continued vaccination.IMPORTANCEThe study described the specific humoral immunity against Omicron and its variants (BA.5, BF.7, and CH1.1) in diverse populations, including Delta-positive convalescent patients, Omicron-infected patients with a previous or current confirmed Delta infection, Omicron-positive patients, and healthy controls. In addition, we followed Delta convalescents for 1 year to evaluate the effect of a booster vaccine, breakthrough infection, and reinfection. Nasal mucosal IgA levels against SARS-CoV-2 were also examined. The findings of this study demonstrated the varied responses of individuals in different states following the outbreak of Omicron, highlighting the potential advantages of ongoing immunization for groups that are more vulnerable and have a greater likelihood of being hospitalized.

COVID-19 and Cancer Care: A Review and Practical Guide to Caring for Cancer Patients in the Era of COVID-19.

COVID-19, a novel infectious disease caused by the emergence of the SARS-CoV-2 virus in 2020, has had a profound impact on healthcare, both at the individual and population level. The impact at the population level was felt most acutely during the emergency phase of the pandemic, with hospital capacity issues leading to widespread disruptions and delays in the delivery of healthcare services such as screening programs and elective surgeries. While hospitals are no longer being acutely overwhelmed by COVID-19 patients, the impact of the virus on vulnerable patient populations such as cancer patients continues to be of ongoing consequence. Cancer patients remain at high risk of hospitalization, ICU admission, and death due to COVID-19, even in the era of vaccination. Infection prevention and risk mitigation strategies such air quality control, masking, testing, vaccination, and treatment should therefore be integrated into the usual care and counseling of cancer patients moving forward to avoid preventable morbidity and mortality from this infection and ensure the safety of this vulnerable cohort as they navigate their cancer diagnosis and treatment in the era of COVID-19.

Social Risks and Health Care Use in Medically Complex Patients

Integrated health care systems have initiated major investments to identify and address social risks, particularly for patients with multiple medical conditions. To evaluate the association of social risks with health care use among patients with complex multimorbidity. This longitudinal cohort study assessed Kaiser Permanente Northern California (KPNC) patients with (1) moderate medical complexity (defined by high comorbidity score, high risk of hospitalization, and/or prior emergency department [ED] admissions) and (2) high medical complexity (eg, meeting additional criteria, such as ≥7 medications and laboratory evidence of poor disease control). Social risks (eg, requiring medical financial assistance and self-reported social barriers to care). Inpatient and outpatient health care use during 12 months of follow-up (January 15, 2023, to January 14, 2024). The sample included 97 252 KPNC patients (mean [SD] age, 69.5 [16] years; 52.1% female; 10.6% Asian, 11.1% Black, 18.3% Hispanic, 54.6% White, and 5.5% other race or ethnicity [eg, American Indian or Alaskan Native, Native Hawaiian or Pacific Islander, multiracial, or unknown race]; and 8.8% insured by Medicaid), including 27 827 with moderate medical complexity (5074 [18.2%] with social risks) and 69 425 with high medical complexity (17 343 [25.0%] with social risks). In fully adjusted models, for moderate medical complexity, social risks were associated with higher odds of inpatient admissions (odds ratio [OR], 1.2; 95% CI, 1.1-1.4), ED visits (OR, 1.2; 95% CI, 1.1-1.3), and mental health visits (OR, 1.2; 95% CI, 1.1-1.3) vs individuals without social risks. Among individuals with high medical complexity, social risks were associated with higher odds of inpatient admissions (OR, 1.2; 95% CI, 1.1-1.2), ED visits (OR, 1.2; 95% CI, 1.1-1.2), and 30-day readmissions (OR, 1.2; 95% CI, 1.1-1.3) and higher odds of mental health visits (OR, 1.3; 95% CI, 1.2-1.3) vs individuals without social risks. In this cohort study of individuals with medical complexity, coexisting social risks were associated with substantial downstream health care use. Efforts to reduce use in individuals with complex medical comorbidity could include concurrent efforts to identify and reduce social risks.