Recent Publications by CFE Educators

To effectively control the spread of COVID-19, it is essential that all jurisdictions have the capacity to rapidly contact trace all close contacts of each and every case. We describe the early experience in the City and County of San Francisco, where contact tracing capability was rapidly expanded to respond to COVID-19. Important prerequisites to scale up included rapid expansion of the COVID-19 contact tracing workforce, a comprehensive training and onboarding program, and the institution of effective performance management metrics. The San Francisco model for contact tracing, including focusing on rigorous training, recruiting, and partnering with community-based organizations from diverse, affected communities, is an inclusive approach relevant to other jurisdictions and settings.

PURPOSE

Post-diagnostic coffee and tea consumption and prostate cancer progression is understudied.

METHODS

We examined 1,557 men from the Cancer of the Prostate Strategic Urologic Research Endeavor who completed a food frequency questionnaire a median of 28 months post-diagnosis. We estimated associations between post-diagnostic coffee (total, caffeinated, decaffeinated) and tea (total, non-herbal, herbal) and risk of prostate cancer progression (recurrence, secondary treatment, bone metastases, or prostate cancer death) using Cox proportional hazards regression. We also examined whether smoking (current, former, never) modified these associations.

RESULTS

We observed 167 progression events (median follow-up 9 years). Higher coffee intake was associated with higher risk of progression among current smokers (n = 95). The hazard ratio (HR) [95% confidence interval (CI)] for 5 vs 0 cups/day of coffee was 0.5 (CI 0.2, 1.7) among never smokers, but 4.5 (CI 1.1, 19.4) among current smokers (p-interaction: 0.001). There was no association between total coffee intake and prostate cancer progression among never and former smokers. However, we observed an inverse association between decaffeinated coffee (cups/days) and risk of prostate cancer progression in these men (HR  : 1.1 (CI 0.7, 1.8); HR: 0.7 (CI 0.3, 1.4); HR: 0.6 (CI 0.3, 1.1); p-trend = 0.03). There was no association between tea and prostate cancer progression, overall or by smoking status.

CONCLUSION

Among non-smoking men diagnosed with localized prostate cancer, moderate coffee and tea consumption was not associated with risk of cancer progression. However, post-diagnostic coffee intake was associated with increased risk of progression among current smokers.

BACKGROUND

Individuals with chronic inflammatory diseases (CID) are frequently treated with immunosuppressive medications that can increase their risk of severe COVID-19. While novel mRNA-based SARS-CoV-2 vaccination platforms provide robust protection in immunocompetent individuals, the immunogenicity in CID patients on immunosuppression is not well established. Therefore, determining the effectiveness of SARS-CoV-2 vaccines in the setting of immunosuppression is essential to risk-stratify CID patients with impaired protection and provide clinical guidance regarding medication management.

METHODS

We conducted a prospective assessment of mRNA-based vaccine immunogenicity in 133 adults with CIDs and 53 immunocompetent controls. Blood from participants over 18 years of age was collected before initial immunization and 1-2 weeks after the second immunization. Serum anti-SARS-CoV-2 spike (S) IgG binding, neutralizing antibody titers, and circulating S-specific plasmablasts were quantified to assess the magnitude and quality of the humoral response following vaccination.

RESULTS

Compared to immunocompetent controls, a three-fold reduction in anti-S IgG titers (P=0.009) and SARS-CoV-2 neutralization (p0.0001) were observed in CID patients. B cell depletion and glucocorticoids exerted the strongest effect with a 36- and 10-fold reduction in humoral responses, respectively (p0.0001). Janus kinase inhibitors and antimetabolites, including methotrexate, also blunted antibody titers in multivariate regression analysis (P0.0001, P=0.0023, respectively). Other targeted therapies, such as TNF inhibitors, IL-12/23 inhibitors, and integrin inhibitors, had only modest impacts on antibody formation and neutralization.

CONCLUSIONS

CID patients treated with immunosuppressive therapies exhibit impaired SARS-CoV-2 vaccine-induced immunity, with glucocorticoids and B cell depletion therapy more severely impeding optimal responses.

Identifying patients hospitalized for acute exacerbations of COPD (AECOPD) who are at high risk for readmission is challenging. Traditional markers of disease severity such as pulmonary function have limited utility in predicting readmission. Handgrip strength, a component of the physical frailty phenotype, may be a simple tool to help predict readmission. To investigate if handgrip strength, a component of the physical frailty phenotype and surrogate for weakness, is a predictive biomarker of COPD readmission. This was a prospective, observational study of patients admitted to the inpatient general medicine unit at the University of Chicago Medicine, US. This study evaluated age, sex, ethnicity, degree of obstructive lung disease by spirometry (FEV percent predicted), and physical frailty phenotype (components include handgrip strength and walk speed). The primary outcome was all-cause hospital readmission within 30 days of discharge. Of 381 eligible patients with AECOPD, 70 participants agreed to consent to participate in this study. Twelve participants (17%) were readmitted within 30 days of discharge. Weak grip at index hospitalization, defined as grip strength lower than previously established cut-points for sex and body mass index (BMI), was predictive of readmission (OR 11.2, 95% CI 1.3, 93.2, = 0.03). Degree of airway obstruction (FEV percent predicted) did not predict readmission (OR 1.0, 95% CI 0.95, 1.1, = 0.7). No non-frail patients were readmitted. At a single academic center weak grip strength was associated with increased 30-day readmission. Future studies should investigate whether geriatric measures can help risk-stratify patients for likelihood of readmission after admission for AECOPD.

We sought to assess the proportion of elicited close contacts diagnosed with coronavirus disease 2019 at the start of and before exiting quarantine in San Francisco. From June 8 to August 31, 6946 contacts were identified: 3008 (46.3%) were tested, 940 (13.5%) tested positive, and 90% tested positive in the first 9 days of quarantine.

OBJECTIVE

1) To identify baseline characteristics of caregivers of school-aged children with spina bifida; 2) To identify independent predictors of caregiver burden in this population.

MATERIALS AND METHODS

A survey was distributed via Facebook advertising to caregivers of patients with congenital genitourinary anomalies from May to September 2018. Eligible participants (n = 408) entailed English-speaking adults who are involved in the patient's care and attend ≥50% of their medical appointments. Caregiver burden was assessed using the Caregiver Burden Inventory (CBI), where higher scores indicate higher burden. CBI ≥24 indicates need for respite and CBI ≥36 indicates high risk of burnout. Bivariate analyses (t-tests and chi-square tests) were conducted using STATA software.

RESULTS

Our analysis includes 408 caregivers caring for patients with spina bifida. In our study population, 59.3% of caregivers were in need of respite due to caregiver burden and 26.7% of caregivers were so burdened that they are at risk of burning out (CBI score ≥36). Bivariate analysis showed that caregiver gender and number of tasks performed by the caregiver were significantly associated with risk of burnout (CBI ≥ 36). Multivariable analysis of overall caregiver burden showed increased risk of burnout (CBI ≥ 36) among older caregivers, female caregivers, and those performing more caregiving tasks.

CONCLUSION

Caregiver burden is common among caregivers of patients with spina bifida, and further research is needed to identify strategies and resources for mitigating caregiver burden.