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"Ford, Laura"
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E-cigarette use and combustible tobacco cigarette smoking uptake among non-smokers, including relapse in former smokers: umbrella review, systematic review and meta-analysis
ObjectiveTo review and summarise the current evidence on the uptake of combustible cigarette smoking following e-cigarette use in non-smokers—including never-smokers, people not currently smoking and past smokers—through an umbrella review, systematic review and meta-analysis.DesignUmbrella review, systematic review and meta-analysis.Data sourcesPubMed, Scopus, Web of Science, PsychINFO (Ovid), Medline (Ovid) and Wiley Cochrane Library up to April 2020.ResultsOf 6225 results, 25 studies of non-smokers—never, not current and former smokers—with a baseline measure of e-cigarette use and an outcome measure of combustible smoking uptake were included. All 25 studies found increased risk of smoking uptake with e-cigarette exposure, although magnitude varied substantially. Using a random-effects model, comparing e-cigarette users versus non-e-cigarette users, among never-smokers at baseline the OR for smoking initiation was 3.19 (95% CI 2.44 to 4.16, I2 85.7%) and among non-smokers at baseline the OR for current smoking was 3.14 (95% CI 1.93 to 5.11, I2 91.0%). Among former smokers, smoking relapse was higher in e-cigarette users versus non-users (OR=2.40, 95% CI 1.50 to 3.83, I2 12.3%).ConclusionsAcross multiple settings, non-smokers who use e-cigarettes are consistently more likely than those avoiding e-cigarettes to initiate combustible cigarette smoking and become current smokers. The magnitude of this risk varied, with an average of around three times the odds. Former smokers using e-cigarettes have over twice the odds of relapse as non-e-cigarettes users. This study is the first to our knowledge to review and pool data on the latter topic.PROSPERO registration numberCRD42020168596.
Journal Article
Virtual crossmatching reveals upregulation of placental HLA-Class II in chronic histiocytic intervillositis
Chronic histiocytic intervillositis (CHI) is a recurrent placental lesion where maternal macrophages infiltrate the intervillous space. Its cause is unknown, though due to similarities to rejected allografts one hypothesis is that CHI represents maternal–fetal rejection. Here, virtual crossmatching was applied to healthy pregnancies and those with a history of CHI. Anti-HLA antibodies, measured by Luminex, were present in slightly more controls than CHI (8/17 (47.1%) vs 5/14 (35.7%)), but there was no significant difference in levels of sensitisation or fetal specific antibodies. Quantification of immunohistochemical staining for HLA-Class II was increased in syncytiotrophoblast of placentas with CHI (Grade 0.44 [IQR 0.1–0.7]) compared to healthy controls (0.06 [IQR 0–0.2]) and subsequent pregnancies (0.13 [IQR 0–0.3]) (
P
= 0.0004
).
HLA-Class II expression was positively related both to the severity of CHI (r = 0.67) and C4d deposition (r = 0.48). There was no difference in overall C4d and HLA-Class I immunostaining. Though increased anti-HLA antibodies were not evident in CHI, increased expression of HLA-Class II at the maternal–fetal interface suggests that they may be relevant in its pathogenesis. Further investigation of antibodies immediately after diagnosis is warranted in a larger cohort of CHI cases to better understand the role of HLA in its pathophysiology.
Journal Article
Increasing Incidence of Salmonella in Australia, 2000-2013
Salmonella is a key cause of foodborne gastroenteritis in Australia and case numbers are increasing. We used negative binomial regression to analyze national surveillance data for 2000-2013, for Salmonella Typhimurium and non-Typhimurium Salmonella serovars. We estimated incidence rate ratios adjusted for sex and age to show trends over time. Almost all states and territories had significantly increasing trends of reported infection for S. Typhimurium, with states and territories reporting annual increases as high as 12% (95% confidence interval 10-14%) for S. Typhimurium in the Australian Capital Territory and 6% (95% CI 5-7%) for non-Typhimurium Salmonella in Victoria. S. Typhimurium notification rates were higher than non-Typhimurium Salmonella rates in most age groups in the south eastern states of Australia, while non-Typhimurium rates were higher in most age groups elsewhere. The S. Typhimurium notification rate peaked at 12-23 months of age and the non-Typhimurium Salmonella notification rate peaked at 0-11 months of age. The age-specific pattern of S. Typhimurium cases suggests a foodborne origin, while the age and geographic pattern for non-Typhimurium may indicate that other transmission routes play a key role for these serovars.
Journal Article
Power Law for Estimating Underdetection of Foodborne Disease Outbreaks, United States
We fit a power law distribution to US foodborne disease outbreaks to assess underdetection and underreporting. We predicted that 788 fewer than expected small outbreaks were identified annually during 1998-2017 and 365 fewer during 2018-2019, after whole-genome sequencing was implemented. Power law can help assess effectiveness of public health interventions.
Journal Article
Intellectual property and industrialization: legalizing hope in economic growth
This article draws on theoretical resources from economic sociology and sociology of law to intervene in economic debates about the relationship between intellectual property and industrialization. Utilizing historical evidence from the earliest period of American intellectual property law and from a formative company in the New England textile industry, I propose a social process of influence that connects intellectual property law to industrialization. I argue that, consistent with the findings of New Economic Sociology, social relationship structures and social capital are the proximate influential force in industrialization. However, I also argue that transformative changes in those social relationship structures are rooted in the emergence of a particular type of political culture: what I call here, borrowing from Hannah Arendt and Frank Dobbin, a \"Natal-Industrial Culture.\" A Natal-Industrial Culture, as I propose it here, is a political culture in which collective hopes for the future are placed in new technologies and new cultural products, as means for achieving economic growth. Intellectual property law contributed to the emergence of this new type of political culture by holding out the promise of property, as a reward for the provision of new technologies or new cultural products. Because of the way that hope works on motivation—through cognitive prerehearsals of future attainment, which involve semantically-meaningful propositions and contribute to positive emotional experience—the promise of property provided a powerful stimulant to social capital formation. Working through the semantic resonances of property, intellectual property law contributed to a political culture in which invention and creativity were expected to secure a future of growth within the political community, both for particular members and for the political community, as a whole. By fostering a Natal-Industrial Culture, intellectual property law contributed to systematic invention and social capital-formation, leading, in turn, to the transformative changes in working and material provisioning that constitute industrialization.
Journal Article
Association of Shared Living Spaces and COVID-19 in University Students, Wisconsin, USA, 2020
We describe characteristics associated with having coronavirus disease (COVID-19) among students residing on a university campus. Of 2,187 students, 528 (24.1%) received a COVID-19 diagnosis during fall semester 2020. Students sharing a bedroom or suite had approximately twice the odds of contracting COVID-19 as those living alone.
Journal Article
Relationship of SARS-CoV-2 Antigen and Reverse Transcription PCR Positivity for Viral Cultures
We assessed the relationship between antigen and reverse transcription PCR (RT-PCR) test positivity and successful virus isolation. We found that antigen test results were more predictive of virus recovery than RT-PCR results. However, virus was isolated from some antigen-negative and RT-PCR‒positive paired specimens, providing support for the Centers for Disease Control and Prevention antigen testing algorithm.
Journal Article
Cost of whole genome sequencing for non-typhoidal Salmonella enterica
While whole genome sequencing (WGS) may be more expensive than traditional testing and polymerase chain reaction (PCR), simple cost comparisons ignore the potential for WGS to reduce the societal costs of non-typhoidal Salmonella enterica through public health action to prevent illness.
We determined how many cases the use of WGS data would need to prevent to be cost-equal to serotyping and MLVA, or culture independent testing based on PCR in Australia. We then examined the costs and cost-savings of current typing methods compared with WGS in outbreak scenarios.
A median of 275 (90% CrI -55-775) or 1.9% (90% CrI -0.4%-5.4%) of notified serotyped Salmonella cases would need to be prevented for WGS to be cost-equal to current typing methods and 1,550 (90% CrI 820-2,725) or 9.6% of all notified Salmonella cases would need to be prevented to be cost-equal to PCR. WGS is likely to result in cost savings in prolonged outbreaks, where data can support earlier public health action.
Despite currently having a higher cost per isolate, routine WGS of Salmonella was no more expensive than existing typing methods or PCR where >2% of illness was averted.
Journal Article