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Lateral flow devices maintain detection sensitivity across Alpha, Delta, and Omicron waves

3 Apr, 2023 | 13:53h | UTC

Summary: The study assessed the performance of antigen lateral flow devices (LFDs) during the alpha, delta, and omicron waves of the SARS-CoV-2 pandemic in the UK. Researchers aimed to understand LFD performance concerning changes in variant infections, vaccination, viral load, and LFD use, as well as the devices’ ability to detect infectious individuals. Paired LFD and RT-PCR test results were collected from both asymptomatic and symptomatic participants between November 2020 and March 2022.

When compared to RT-PCR testing, the overall LFD sensitivity was 63.2%, and specificity was 99.71%. The sensitivity was higher in symptomatic participants (68.7%) than in asymptomatic participants (52.8%). The study found that increased viral load was independently associated with a higher likelihood of being LFD positive. There was no evidence of a significant difference in LFD sensitivity between the alpha and delta variants, but sensitivity increased during the omicron wave. Vaccination status did not show an independent association with LFD sensitivity.

The study concluded that LFDs can detect most SARS-CoV-2 infections across different viral variants and during vaccine roll-out, contributing to reduced transmission risk. However, LFD performance is lower in asymptomatic individuals, which should be taken into account when designing testing programs.

Article: Performance of antigen lateral flow devices in the UK during the alpha, delta, and omicron waves of the SARS-CoV-2 pandemic: a diagnostic and observational study – The Lancet Infectious Diseases

Invited Commentary: The performance of rapid antigen tests against SARS-CoV-2 variants – The Lancet Infectious Diseases

Related:

Rapid antigen-based and rapid molecular tests for the detection of SARS-CoV-2: a rapid review with network meta-analysis of diagnostic test accuracy studies – BMC Medicine

Accuracy of rapid point-of-care antigen-based diagnostics for SARS-CoV-2: An updated systematic review and meta-analysis with meta-regression analyzing influencing factors – PLOS Medicine

Interpreting a lateral flow SARS-CoV-2 antigen test – The BMJ

Rapid, point‐of‐care antigen and molecular‐based tests for diagnosis of SARS‐CoV‐2 infection – Cochrane Library

 


Review | Dysfunctional labor and delivery: adverse effects on offspring

3 Apr, 2023 | 13:36h | UTC

Dysfunctional labor and delivery: adverse effects on offspring – American Journal of Obstetrics & Gynecology (free for a limited period)

 


Perspective | Teen girls are faring worse than boys on nearly all mental health measures—here’s why

3 Apr, 2023 | 13:33h | UTC

Teen Girls Are Faring Worse Than Boys on Nearly All Mental Health Measures—Here’s Why – JAMA (free for a limited period)

 

Commentary on Twitter

 


Assessment of childhood short stature: a GP guide

3 Apr, 2023 | 13:28h | UTC

Assessment of childhood short stature: a GP guide – British Journal of General Practice (free for a limited period)

 


Cohort Study | Associations between fetal or infancy pet exposure and food allergies

3 Apr, 2023 | 13:26h | UTC

Associations between fetal or infancy pet exposure and food allergies: The Japan Environment and Children’s Study – PLOS One

 


Postoperative delirium’s linked to long-term cognitive decline in elderly patients

3 Apr, 2023 | 13:20h | UTC

Postoperative Delirium’s linked to Long-term Cognitive Decline in Elderly Patients – JAMA Internal Medicine (link to abstract – $ for full-text)

News Release: Developing postoperative delirium associated with a faster rate of cognitive decline, says study – EurekAlert

Commentary: Postoperative Delirium Associated With Accelerated Cognitive Decline, Study Finds – Psychiatric News Alert

 

Commentary on Twitter

 


Perspective | Should case management be considered a component of obstetrical interventions for pregnancies at risk of preterm birth?

3 Apr, 2023 | 13:18h | UTC

Should case management be considered a component of obstetrical interventions for pregnancies at risk of preterm birth? – American Journal of Obstetrics & Gynecology

 

Commentary on Twitter

 


Assessing heart failure risk: waist-to-height ratio outperforms BMI in HFrEF patients

31 Mar, 2023 | 13:49h | UTC

Anthropometric measures and adverse outcomes in heart failure with reduced ejection fraction: revisiting the obesity paradox – European Heart Journal

Editorial: Revisiting the obesity paradox in heart failure: what is the best anthropometric index to gauge obesity? – European Heart Journal

News Release: Study shows ‘obesity paradox’ does not exist: waist-to-height ratio is a better indicator of outcomes in patients with heart failure than BMI – European Society of Cardiology

Commentary: Study Debunks Obesity Paradox in HF, Encourages BMI Alternatives – TCTMD

 


RCT | Early postpartum IUD placement noninferior vs. placement at 6-8 weeks for complete expulsion, but not for partial expulsion

31 Mar, 2023 | 13:48h | UTC

Early vs Interval Postpartum Intrauterine Device Placement: A Randomized Clinical Trial – JAMA (link to abstract – $ for full-text)

News Release: Study: Risk of IUD Expulsion in Early Postpartum Placement – UC San Diego Health

Commentary: IUD Placement at Two to Four Weeks Postpartum Noninferior – HealthDay

Related:

SR | Immediate versus delayed postpartum insertion of contraceptive implant and IUD for contraception.

Placement of an intrauterine device within 48 hours after early medical abortion – a randomized controlled trial – American Journal of Obstetrics & Gynecology

 

Commentary on Twitter

 


M-A | Effects of statin therapy on glycemic control and insulin resistance

31 Mar, 2023 | 13:45h | UTC

Effects of statin therapy on glycemic control and insulin resistance: A systematic review and meta-analysis – European Journal of Pharmacology

Related:

Cohort study: Statin therapy initiation linked to increased risk of diabetes progression.

Meta-Analysis: Medications that Reduce or Increase the Risk of New Onset Diabetes

Observational Study Points to an Increased Risk of Diabetes Among Patients Using Statins

Another Observational Study Showing Association of Statin Use with Risk of New‐Onset Diabetes Mellitus

Cohort Study: Statin Use Associated with a 38% Higher Risk of Incident Type 2 Diabetes

 


Study shows clinical instability and severity are predictors for psychiatric hospitalization

31 Mar, 2023 | 13:42h | UTC

Predicting Psychiatric Admissions: The Role of Early Clinical Trajectories Across Diagnoses – The Lancet Psychiatry

Commentaries:

New study reveals clinical instability predicts psychiatric hospitalization – MedicalXpress

Instability, Clinical Severity Predict Hospitalization Risk for Psychiatric Illness – HCP Live

 


SR | Etiologies of vertigo in the elderly

31 Mar, 2023 | 13:38h | UTC

Vertigo in the Elderly: A Systematic Literature Review – Journal of Clinical Medicine

 


Cohort Study | Diffusing capacity strongly predicts all-cause mortality in individuals with COPD

31 Mar, 2023 | 13:31h | UTC

Diffusing Capacity and Mortality in Chronic Obstructive Pulmonary Disease – Annals of the American Thoracic Society (link to abstract – $ for full-text)

Commentary: Diffusing capacity ‘strongly predicted’ mortality in COPD patients – Healio (free registration required)

 

Commentary on Twitter

 


SR | Nonopioid pharmacological management of acute low back pain

31 Mar, 2023 | 13:27h | UTC

Nonopioid pharmacological management of acute low back pain: A level I of evidence systematic review – Journal of Orthopaedic Research

 


M-A | Exploring the efficacy of psychotherapies for depression

31 Mar, 2023 | 13:19h | UTC

Exploring the efficacy of psychotherapies for depression: a multiverse meta-analysis – BMJ Mental Health

 


Updated WHO Guidelines | COVID-19 boosters no longer routinely recommended for low-risk groups

30 Mar, 2023 | 14:33h | UTC

Summary: The WHO’s Strategic Advisory Group of Experts on Immunization (SAGE) has revised its COVID-19 vaccination roadmap in light of the Omicron variant and widespread population immunity. The revised roadmap prioritizes protecting those at the highest risk of severe disease and death while maintaining resilient health systems. It introduces cost-effectiveness considerations for vaccinating lower-risk individuals, such as healthy children and adolescents, and presents revised booster dose recommendations.

Priority groups are categorized as high, medium, and low, based on factors like risk of severe disease and death. People in the high-priority group, consisting of older adults, individuals with significant comorbidities or immunocompromising conditions, pregnant persons, and frontline health workers, are advised to receive additional boosters 6 or 12 months after the last dose. The medium priority group, which includes healthy adults without comorbidities and children with comorbidities, is recommended to receive primary series and first booster doses. However, SAGE no longer routinely recommends additional boosters for this group due to limited public health gains.

For the low-priority group, encompassing healthy children and adolescents, vaccination decisions should take into account factors such as disease prevalence and cost-effectiveness. It is important to note that the public health benefits of vaccinating healthy children and adolescents are considerably lower compared to established essential vaccines for children, like rotavirus, measles, and pneumococcal conjugate vaccines.

News Release: SAGE updates COVID-19 vaccination guidance – World Health Organization

Commentaries:

No More COVID-19 Boosters for Healthy People, WHO Experts Recommend – Health Policy Watch

WHO vaccine advisers update COVID vaccine recommendations – CIDRAP

 


Study suggests no heightened death risk in young people with mRNA vaccines, but ChAdOx1 nCoV-19 vaccine linked to female cardiac deaths

30 Mar, 2023 | 14:28h | UTC

Risk of death following COVID-19 vaccination or positive SARS-CoV-2 test in young people in England – Nature Communications

Commentary: Expert reaction to ONS data on risk of death following COVID-19 vaccination or positive SARS-CoV-2 test in young people, England: 8 December 2020 to 25 May 2022 – Science Media Centre

 

Commentary from the author on Twitter (thread – click for more)

 


Opinion | ChatGPT will change Medicine

30 Mar, 2023 | 14:22h | UTC

Chat GPT will change Medicine – Vinay Prasad’s Observations and Thoughts

Related:

The use of ChatGPT and other large language models in surgical science – BJS Open

ChatGPT vs. NCI: analyzing the quality of cancer information on myths and misconceptions

ChatGPT has many uses. Experts explore what this means for healthcare and medical research – The Conversation

Artificial Intelligence in Medicine & ChatGPT: De-Tether the Physician – Journal of Medical Systems (if the link is paywalled, try this one)

Can artificial intelligence help for scientific writing? – Critical Care

Artificial intelligence in academic writing: a paradigm-shifting technological advance

Performance of ChatGPT on USMLE: potential for AI-assisted medical education using large language models

Perspective | ChatGPT-assisted diagnosis: is the future suddenly here?

Perspective | Generating scholarly content with ChatGPT: ethical challenges for medical publishing

ChatGPT: Will It Transform the World of Health Care? – UCSF Department of Medicine

ChatGPT and the future of medical writing (ChatGPT itself wrote this paper)

ChatGPT: five priorities for research – Nature

The path forward for ChatGPT in academia – Lumo’s Newsletter

Nonhuman “Authors” and Implications for the Integrity of Scientific Publication and Medical Knowledge – JAMA

ChatGPT is fun, but not an author – Science

Tools such as ChatGPT threaten transparent science; here are our ground rules for their use – Nature

ChatGPT listed as author on research papers: many scientists disapprove – Nature

Abstracts written by ChatGPT fool scientists

 


Review | Evaluation and management of hypernatremia in adults

30 Mar, 2023 | 14:20h | UTC

Evaluation and management of hypernatremia in adults: clinical perspectives – The Korean Journal of Internal Medicine

 


2ry analysis of a RCT | Vitamin D supplementation does not affect cognitive function in older adults

30 Mar, 2023 | 14:14h | UTC

Vitamin D supplementation and cognition—Results from analyses of the D-Health trial – Journal of the American Geriatrics Society (link to abstract – $ for full-text)

Original Study: RCT: Oral Vitamin D supplementation (60.000 IU per month) did not reduce mortality in patients 60 years or older (unscreened individuals in Australia, many without insufficiency, average 30ng/mL). Exploratory analyses pointed towards an increased risk of death from cancer.

Related:

Randomized Trial: Vitamin D Supplements and Prevention of Cancer and Cardiovascular Disease

Meta-Analysis: Vitamin D Not Effective for Cardiovascular Disease Prevention

Association between vitamin D supplementation and mortality: systematic review and meta-analysis – The BMJ

USPSTF Draft Statement: Insufficient evidence to recommend multivitamin supplements for the prevention of CVD or cancer. The statement also recommends against the use of beta-carotene (increases risk of CVD mortality and lung cancer) or vitamin E (clear evidence of no benefit)

Vitamin D, calcium, other vitamins, and supplements do not prevent cardiovascular diseases

Research: Circulating vitamin D concentration and risk of seven cancers

Research: Vitamin D and risk of total and site specific cancers

 


SR | Consequences of Shigella infection in young children

30 Mar, 2023 | 13:52h | UTC

Consequences of Shigella infection in young children: a systematic review – International Journal of Infectious Diseases

 


Review | Insomnia diagnosis and treatment across the lifespan

30 Mar, 2023 | 13:36h | UTC

Insomnia diagnosis and treatment across the lifespan – Journal of Family Practice

 


Ketamine misuse: an update for primary care

30 Mar, 2023 | 13:34h | UTC

Ketamine misuse: an update for primary care – British Journal of General Practice

 


Review | How to integrate shared decision-making into your practice

30 Mar, 2023 | 13:35h | UTC

How to integrate shared decision-making into your practice – Journal of Family Practice

 


Ear wax management in primary care: what the busy GP needs to know

30 Mar, 2023 | 13:33h | UTC

Ear wax management in primary care: what the busy GP needs to know – British Journal of General Practice

 


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