Publications by authors named "Alexander L Chu"

Article Synopsis
  • The study aimed to examine the prevalence of non-communicable diseases, particularly diabetes, among household contacts of individuals with tuberculosis (TB).
  • A systematic review identified 39 studies, with 14 providing individual participant data and 25 offering aggregated data; the results showed a pooled diabetes prevalence of 8.8% among those tested properly.
  • Findings indicate that diabetes prevalence among household contacts is likely underestimated, highlighting the importance of targeted interventions during TB contact investigations to identify and address these health issues.
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Background: Few studies have explored a stepped care model for delivering mental health care to persons with tuberculosis (TB). Here, we evaluated depression screening and remote low-intensity mental health interventions for persons initiating TB treatment in Lima, Peru during the COVID-19 pandemic.

Methods: We used the Patient Health Questionnaire 9 (PHQ-9) to screen participants for depressive symptoms (PHQ-9 ≥ 5).

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Mental disorders are common among persons with tuberculosis (TB), and the COVID-19 pandemic has only amplified the mental and physical health consequences of this deadly synergy. Here, we call to attention the immense vulnerability of people with TB to mental disorders during the pandemic and highlight the unique challenges and opportunities that the pandemic brings to the future integration of global TB and mental healthcare. We argue that the pandemic era is an ideal period to accelerate this integration and we provide research and policy recommendations to actualise this urgent need.

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Nirmatrelvir/ritonavir was recently granted emergency use authorization for mild to moderate coronavirus disease 2019. Drug-drug interactions between ritonavir and tacrolimus are underappreciated by nontransplant providers. We describe 2 solid organ transplant recipients prescribed nirmatrelvir/ritonavir for outpatient use who developed tacrolimus toxicity requiring hospitalization and were managed with rifampin for toxicity reversal.

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Background: The COVID-19 pandemic has presented new challenges surrounding end-of-life planning and has been associated with increased online discussion about life support.

Research Question: How has online communication about advance care planning (ACP) and specific life-sustaining interventions (LSIs) changed during the pandemic?

Study Design And Methods: Conversations on Twitter containing references to LSIs (eg, "ECMO") or ACP (eg, "DNR/DNI") were collected between January 2019 and May 2021. User account metadata were used to predict user demographic information and to classify users as organizations, individuals, clinicians, or influencers.

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Purpose: Colorectal cancer (CRC) is the second leading cause of cancer-related mortality worldwide. Social media platforms such as Twitter are extensively used to communicate about cancer care, yet little is known about the role of these online platforms in promoting early detection or sharing the lived experiences of patients with CRC. This study tracked Twitter discussions about CRC and characterized participating users to better understand public communication and perceptions of CRC during the COVID-19 pandemic.

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Background: While previous studies have shown that cigarette smoking increases the infectiousness of tuberculosis patients, the impact of smoking cessation on tuberculosis transmissibility has not been evaluated.

Methods: Between 2009 and 2012, we enrolled 4500 tuberculosis patients and followed 14 044 household contacts in Lima, Peru. Tuberculosis patients were classified into 4 categories: never smoked, quit in the distant past (stopped smoking >2 months prior to time of diagnosis), recently quit (stopped smoking ≤2 months prior to time of diagnosis), and active smokers.

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The multifaceted role of low-grade systemic inflammation in depression and physical illnesses like cardiovascular disease highlights complex interactions between the body, brain and mind. While current research on inflammation and depression has largely focused on exploring possible disease mechanisms and therapeutic potential, we seek to broaden the current discussion by introducing a public health perspective. In this Viewpoint, we propose that inflammation and its contributing sources could represent important targets for public health strategies aimed at improving both mental and physical health.

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Few studies have prospectively compared the relative transmissibility and propensity to cause disease of Mycobacterium tuberculosis Beijing strains with other human-adapted strains of the M. tuberculosis complex. We assessed the effect of Beijing strains on the risk for M.

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Background: Low-grade inflammation is associated with depression, but studies of specific symptoms are relatively scarce. Association between inflammatory markers and specific symptoms may provide insights into potential mechanism of inflammation-related depression. Using longitudinal data, we have tested whether childhood serum interleukin 6 (IL-6) and C-reactive protein (CRP) levels are associated with specific depressive symptoms in early adulthood.

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