scholarly journals A Systematic Review of the Protective Effect of Prior SARS-CoV-2 Infection on Repeat Infection

2021 ◽  
pp. 016327872110479
Author(s):  
N. Kojima ◽  
N. K. Shrestha ◽  
J. D. Klausner

We systematically reviewed studies to estimate the risk of SARS-CoV-2 reinfection among those previously infected with SARS-CoV-2. For this systematic review, we searched scientific publications on PubMed and MedRxiv, a pre-print server, through August 18, 2021. Eligible studies were retrieved on August 18, 2021. The following search term was used on PubMed: (((“Cohort Studies”[Majr]) AND (“COVID-19”[Mesh] OR “SARS-CoV-2”[Mesh])) OR “Reinfection”[Majr]) OR “Reinfection”[Mesh]. The following search term was used on MedRxiv: “Cohort Studies” AND “COVID-19” OR “SARS-CoV-2” AND “Reinfection”. The search terms were broad to encompass all applicable studies. There were no restrictions on the date of publication. Studies that did not describe cohorts with estimates of the risk of SARS-CoV-2 reinfection among those with previous infection were excluded. Studies that included vaccinated participants were either excluded or limited to sub-groups of non-vaccinated individuals. To identify relevant studies with appropriate control groups, we developed the following criteria for studies to be included in the systematic analysis: (1) baseline polymerase chain reaction (PCR) testing, (2) a uninfected comparison group, (3) longitudinal follow-up, (4) a cohort of human participants, i.e. not a case report or case series, and (5) outcome determined by PCR. The review was conducted following PRISMA guidelines. We assessed for selection, information, and analysis bias, per PRISMA guidelines. We identified 1,392 reports. Of those, 10 studies were eligible for our systematic review. The weighted average risk reduction against reinfection was 90.4% with a standard deviation of 7.7% ( p-value: <0.01). Protection against SARS-CoV-2 reinfection was observed for up to 10 months. Studies had potential information, selection, and analysis biases. The protective effect of prior SARS-CoV-2 infection on re-infection is high and similar to the protective effect of vaccination. More research is needed to characterize the duration of protection and the impact of different SARS-CoV-2 variants.

2021 ◽  
Author(s):  
Noah Kojima ◽  
Nabin Shrestha ◽  
Jeffrey D Klausner

Introduction: We systematically reviewed studies to estimate the risk of SARS-CoV-2 reinfection among those previously infected with SARS-CoV-2. Methods: For this systematic review, we searched scientific publications on PubMed and, the pre-print server, MedRxiv through August 18, 2021. Eligible studies were retrieved on August 18, 2021. We used the following search term on PubMed: (((Cohort Studies [Majr]) AND (COVID-19 [Mesh] OR SARS-CoV-2 [Mesh])) OR Reinfection [Majr]) OR Reinfection [Mesh]. We used the following search term on MedRxiv: Cohort Studies AND COVID-19 OR SARS-CoV-2 AND Reinfection. The search terms were broad to encompass all possibilities for applicable studies. There were no restrictions on the date of publication. Studies that did not describe cohorts with estimates of the risk of SARS-CoV-2 reinfection among those with previous infection were excluded. Studies that included vaccinated participants were either excluded or limited to sub-groups of non-vaccinated individuals. To identify relevant studies with appropriate control groups, we developed the following criteria for studies to be included in the systematic analysis: (1) baseline polymerase chain reaction (PCR) testing, (2) a negative comparison group, (3) longitudinal follow-up, (4) a cohort of human participants, i.e., not a case report or case series, and (5) outcome determined by PCR. The review was conducted following PRISMA guidelines. We assessed for selection, information, and analysis bias, per PRISMA guidelines. Results: We identified 1,392 reports. Of those, 10 studies were eligible for our systematic review. The weighted average risk reduction against reinfection was 90.4% with a standard deviation of 7.7%. Protection against SARS-CoV-2 reinfection was observed for up to 10 months. Studies had potential information, selection, and analysis biases. Conclusions: The protective effect of prior SARS-CoV-2 infection on re-infection is high and similar to the protective effect of vaccination. More research is needed to characterize the duration of protection and the impact of different SARS-CoV-2 variants.


Author(s):  
Priyanka Mishra ◽  
◽  
Amborish Nath ◽  
Surbhi Sharma ◽  
Ajit Kumar ◽  
...  

The rapidly evolving health concern for COVID-19 has considerably overshadowed the non-COVID ailments. Ranging from delays in diagnosis and treatment, neglect of mild-moderate diseases resulting into their progression, adverse pregnancy outcomes and many others, an array of the collateral damage of this pandemic is still evolving. We have performed this systematic review about the impact of COVID pandemic on patients suffering from other ailments. Our search was conducted through PubMed, Cochrane and Google scholar databases. We included systematic reviews and meta- analysis, and randomized controlled trials, observational studies, case series and case reports to ensure comprehensiveness of our search. We excluded abstract only articles, news articles, the non-scientific commentaries and reports from the review. Primary outcome was assessment of the impact of COVID pandemic on non-COVID diseases and management strategies for tackling the same. This review showed that this crisis has resulted into a significant delay in routine diagnostic procedures and workup with p value < 0.00001 (OR of 0.36; 95% CI, 0.24 to 0.55). The highest impacts will be seen with preexisting major health priorities like HIV, tuberculosis, malignancy, various non-communicable diseases, reproductive and child health. The chief culprits for this include inadequate supplies of medicines, healthcare staff, diagnostics and other technologies. Expansion of the health care workforce, enhanced health financing and supply chain resilience can help us override this pandemic. Hence, the intersection of COVID-19 with other non- COVID ailments can have drastic effects. To minimize this surplus morbidity and mortality, we need to adopt comprehensive strategies and maintain the momentum even after this pandemic is surpassed. Keywords: COVID-19; neglect; non-COVID; non-communicable diseases; communicable diseases; management.


CJEM ◽  
2018 ◽  
Vol 20 (S1) ◽  
pp. S71-S72
Author(s):  
A. Eksteen ◽  
J. Odenbach ◽  
C. Archer ◽  
C. Domke

Introduction: Trauma leading to uncontrolled hemorrhage of the torso in the critically injured patient can rapidly progress to decreased cerebral and cardiovascular perfusion and carries a significant morbidity and mortality. Given the non-compressible nature and difficult anatomic access of these injuries, obtaining hemostasis is often a challenge and non-surgical options are sparse. Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) is a rapidly administered emergency department intervention that allows transient source control of caudal torso hemorrhage while arranging definitive surgical management. Although initially postulated in the 1950s, limited research regarding its therapeutic use in trauma has been available until recently. Here, we present a systematic review of the literature pertaining to the use of REBOA in severe trauma. Methods: An experienced medical librarian searched electronic databases for terms relating to REBOA, aortic balloon occlusion, hemorrhage, trauma and shock. Articles were identified, screened, retrieved and reviewed in accordance with PRISMA systematic review guidelines. English case reports, case series, cohort studies, randomized-controlled trials, systematic reviews and meta-analyses pertaining to the use of REBOA in human trauma patients were included. Customized inclusion and data extraction forms were created and used to form an electronic database of relevant studies. Results: After exclusion of duplicates, 2147 potentially relevant articles were identified and screened by title/abstract and 136 articles meeting inclusion criteria were retrieved for full-text review. Final analysis of 26 articles included 5 case reports, 13 case series, 7 observational cohort studies and 1 systematic review. Data spanning 771 patients undergoing REBOA were collected (weighted average age: 49.5, gender: 67.7% male, injury severity score: 35.1). Where data available, REBOA increased systolic blood pressure by a weighted average of 54.7mmhg and overall survival was 32.6%. Conclusion: Limited evidence pertaining to the use of REBOA in severe trauma exists with the majority of available data coming from individual case studies and case series. By extension, quantitative analysis regarding outcome data of this intervention requires further research in the form of larger studies with subgroup analysis to identify the subset of patients for which REBOA may benefit and to further delineate the risks of implementing this intervention


2020 ◽  
Vol 20 (3) ◽  
pp. 284-290
Author(s):  
Jocelyn Chan ◽  
Yue Wu ◽  
James Wood ◽  
Mohammad Muhit ◽  
Mohammed K. Mahmood ◽  
...  

Background and Objectives: Congenital Rubella Syndrome (CRS) is the leading cause of vaccine-preventable congenital anomalies. Comprehensive country-level data on the burden of CRS in low and middle-income countries, such as Bangladesh, are scarce. This information is essential for assessing the impact of rubella vaccination programs. We aim to systematically review the literature on the epidemiology of CRS and estimate the burden of CRS in Bangladesh. Methods: We conducted a systematic review of existing literature and transmission modelling of seroprevalence studies to estimate the pre-vaccine period burden of CRS in Bangladesh. OVID Medline (1948 – 23 November 2016) and OVID EMBASE (1974 – 23 November 2016) were searched using a combination of the database-specific controlled vocabulary and free text terms. We used an age-stratified deterministic model to estimate the pre-vaccination burden of CRS in Bangladesh. Findings: Ten articles were identified, published between 2000 and 2014, including seven crosssectional studies, two case series and one analytical case-control study. Rubella seropositivity ranged from 47.0% to 86.0% among all age population. Rubella sero–positivity increased with age. Rubella seropositivity among women of childbearing age was 81.0% overall. The estimated incidence of CRS was 0·99 per 1,000 live births, which corresponds to approximately 3,292 CRS cases annually in Bangladesh. Conclusion: The estimated burden of CRS in Bangladesh during the pre-vaccination period was high. This will provide important baseline information to assess the impact and cost-effectiveness of routine rubella immunisation, introduced in 2012 in Bangladesh.


Rheumatology ◽  
2021 ◽  
Author(s):  
Vincenzo G Menditto ◽  
Giulia Rossetti ◽  
Diletta Olivari ◽  
Alessia Angeletti ◽  
Marco Rocchi ◽  
...  

Abstract Objective to analyze the available evidence about the use of rituximab (RTX) and other biologic agents in Eosinophilic Granulomatosis with Polyangiitis (EGPA) patients and to provide useful findings to inform the design of future, reliable clinical trials. Methods A systematic review was performed. A systematic search was conducted in PubMed/MEDLINE, Scopus, Web of Science and the Cochrane library databases and an extensive literature search on other biologic agents. Results 45 papers pertinent to our questions were found: 16 retrospective cohort studies, 8 case series, 3 prospective cohort studies and 18 single case reports, for a total of 368 EGPA patients. More than 80% of evaluable patients achieved complete or partial remission with a tendency towards a higher rate of complete response in pANCA positive subgroup. Conclusion Although the majority of the evaluable EGPA patients treated with RTX appears to achieve complete remission, we strongly believe that a number of sources of heterogeneity impairs a clear interpretation of results and limits their transferability in clinical practice. Differences in design, enrollment criteria, outcome definition and measurement make a comparison among data obtained from studies on RTX and other biologic agents unreliable.


2019 ◽  
Vol 57 (5) ◽  
pp. 817-825
Author(s):  
Theo M M H de By ◽  
Rahatullah Muslem ◽  
Kadir Caliskan ◽  
Giacomo Bortolussi ◽  
Tine Philipsen ◽  
...  

Abstract The influence of registries in medicine is large. However, there has been no systematic assessment conducted to quantify the impact of benchmarking with registries focused on cardiothoracic surgery. Numerous publications conclude that registry participation leads to improvement of outcomes for patients. A large number of registries provide evidence sub-structured by statistics that show decreases in morbidity and mortality in the participants’ clinical units. Many authors praise the benchmarking method making use of databases of registries as having a positive effect on outcome of care. However, studies proving the direct causal relation between the use of cardiothoracic surgery-oriented registries and improvement of clinical in-hospital outcomes are extremely scarce. We aimed to analyse the causal relation between the use of cardiothoracic surgery-oriented registries and improvement of clinical outcomes. In a systematic literature review, publications demonstrating the use of registry data to obtain consolidated quality improvements were selected. After analysis of 2990 scientific publications, 6 studies filled the inclusion criteria. The selected studies acknowledged that benchmarking of data against registries was used for a focused and methodologically organized improvement in cardiothoracic departments. In conjunction with the impact of the applied methods on healthcare, their results demonstrate quantifiable enhanced local outcomes over time.


BMJ Open ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. e028379 ◽  
Author(s):  
Jenaya Goldwag ◽  
Priscilla Marsicovetere ◽  
Peter Scalia ◽  
Heather A Johnson ◽  
Marie-Anne Durand ◽  
...  

ObjectivesOur aim was to conduct a systematic review of the literature to determine the impact of patient decision aids (PDA) on patients facing treatment decisions for colorectal cancer.DesignSystematic review.Data sourcesSources included Embase, Medline, Web of Science, CINAHL and the Cochrane Library from inception to June, 20, 2019.Eligibility criteriaWe included randomised controlled trials (RCTs), cohort studies, mixed methods and case series in which a PDA for colorectal cancer treatment was used. Qualitative studies were excluded from our review.Data extraction and synthesisFollowing execution of the search strategy by a medical librarian, two blinded independent reviewers identified articles for inclusion. Two blinded reviewers were also responsible for data extraction, risk of bias and study quality assessments. Any conflict in article inclusion or extraction was resolved by discussion.ResultsOut of 3773 articles identified, three met our inclusion criteria: one RCT, one before-and-after study and one mixed-method study. In these studies, the use of a PDA for colorectal cancer treatment was associated with increased patient knowledge, satisfaction and preparation for making a decision. On quality assessment, two of three studies were judged to be of low quality.ConclusionA paucity of evidence exists on the effect of PDA for colorectal cancer treatment with existing evidence being largely of low quality. Further investigation is required to determine the effect of decision aids for colorectal cancer treatment as well as reasons for the lack of PDA development and implementation in this area.Prospero registration numberCRD42018095153.


2018 ◽  
Vol 59 (4) ◽  
pp. e311-e324 ◽  
Author(s):  
Lydia Brown ◽  
Jeff C Huffman ◽  
Christina Bryant

Abstract Abstract Background and Objectives There is considerable heterogeneity in experiences of aging, with some experiencing greater well-being and adapting more successfully to the challenges of aging than others. Self-compassion is a modifiable psychological skill that might help explain individual differences in well-being and adjustment in later life. The aim of this study was to systematically review the literature on self-compassion and well-being outcomes in studies of older adults aged 65 and older. Research Design and Methods This systematic review was conducted according to PRISMA guidelines, using databases PsycINFO, Medline, and Embase. The search term self-compassion was paired with terms relating to well-being, psychological symptoms, and adjustment. Meta-analysis was used to synthesize results on the relationship between self-compassion and four outcomes including depression, anxiety, hedonic well-being, and eudaimonic well-being. Results Eleven studies met inclusion criteria for this review. Meta-analysis revealed that self-compassion was associated with lower levels of depression (r = −.58, 95% CI [−.66, −.48]) and anxiety (r = −.36, 95% CI [−.60, −.07]), and higher levels of hedonic (r = .41, 95% CI [.15, .62]) and eudaimonic (r = .49, 95% CI [.41, .57]) well-being. Further, three studies found self-compassion weakened the impact of physical symptoms on well-being outcomes. Discussion and Implications We found preliminary evidence that self-compassion is associated with well-being outcomes in older adults, and that self-compassion may buffer the psychological sequelae of health symptoms in later life. Higher quality studies with uniform outcome measures are needed to replicate and extend these results.


2009 ◽  
Vol 46 (1) ◽  
pp. 30-38 ◽  
Author(s):  
Sirisha Ponduri ◽  
Rebecca Bradley ◽  
Pamela E. Ellis ◽  
Sara T. Brookes ◽  
Jonathan R. Sandy ◽  
...  

Objective: To determine whether early routine grommet insertion in children with cleft palate has a beneficial effect on hearing and speech and language development compared with conservative management. Design: Systematic review of randomized controlled trials, controlled clinical trials, case series, and prospective and historical cohort studies. Main Outcome Measures: The main outcome measure was the effect of early routine grommet placement on the degree of conductive hearing loss. Secondary outcome measures included differences in hearing level, possible side effects, speech and language development, and quality of life. Results: We identified 368 citations for review. From a review of the titles, 34 potentially relevant papers were selected. Of these, 18 studies met our inclusion criteria, including eight case series, six historical cohort studies, three prospective cohort studies, and one randomized trial. Most studies were either small or of poor quality or both. The results of the studies were contradictory, with some studies suggesting early placement of grommets was beneficial and others reporting there was no benefit. Conclusions: There is currently insufficient evidence on which to base the clinical practice of early routine grommet placement in children with cleft palate.


Pulse ◽  
2021 ◽  
Vol 9 (1-2) ◽  
pp. 38-46
Author(s):  
Angkawipa Trongtorsak ◽  
Natchaya Polpichai ◽  
Sittinun Thangjui ◽  
Jakrin Kewcharoen ◽  
Ratdanai Yodsuwan ◽  
...  

<b><i>Background:</i></b> Gender-related differences in phenotypic expression and outcomes have been established in many cardiac conditions; however, the impact of gender in hypertrophic cardiomyopathy (HCM) remains unclear. We conducted a systematic review and meta-analysis to assess the differences in clinical outcomes between female and male HCM patients. <b><i>Methods:</i></b> We searched MEDLINE and EMBASE from inception to October 2020. Included were cohort studies that compared outcomes of interest including all-cause mortality, HCM-related mortality, and worsening heart failure (HF) or HF hospitalization between male and female. Data from each study were combined using the random effects model to calculate pooled odds ratio (OR) with 95% confidence interval (CI). <b><i>Results:</i></b> Eleven retrospective cohort studies with a total of 9,427 patients (3,719 females) were included. Female gender was significantly associated with an increased risk of all-cause mortality (pooled OR = 1.63, 95% CI: 1.26–2.10, <i>p</i> ≤ 0.001), HCM-related mortality (pooled OR = 1.47, 95% CI: 1.08–2.01, <i>p</i> = 0.015), and worsening HF or HF hospitalization (pooled OR = 2.05, 95% CI: 1.76–2.39, <i>p</i> ≤ 0.001). <b><i>Conclusions:</i></b> Female gender was associated with a worse prognosis in HCM. These findings suggest the need for improved care in women including early identification of disease and more possible aggressive management. Moreover, gender-based strategy may benefit in HCM patients.


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