| 1 | SARS-CoV 2 infections and attitudes towards COVID-19 vaccines among healthcare workers in the New York Metropolitan area,USA显示文摘Objective Because of their increased interaction with patients,healthcare workers(HCWs)face greater vulnerability to COVID-19 exposure than the general population.We examined prevalence and correlates of ever COVID-19 diagnosis and vaccine uncertainty among HCWs.Design Cross-sectional data from the Household Pulse Survey(HPS)conducted during July to October 2021.Setting HPS is designed to yield representative estimates of the US population aged≥18 years nationally,by state and across selected metropolitan areas.Participants Our primary analytical sample was adult HCWs in the New York Metropolitan area(n=555),with HCWs defined as individuals who reported working in a‘Hospital’;‘Nursing and residential healthcare facility’;‘Pharmacy’or‘Ambulatory healthcare setting’.In the entire national sample,n=25909 HCWs completed the survey.Descriptive analyses were performed with HCW data from the New York Metropolitan area,the original epicentre of the pandemic.Multivariable logistic regression analyses were performed on pooled national HCW data to explore how HCW COVID-19-related experiences,perceptions and behaviours varied as a function of broader geographic,clinical and sociodemographic characteristics.Results Of HCWs surveyed in the New York Metropolitan area,92.3%reported being fully vaccinated,and 20.9%had ever been diagnosed of COVID-19.Of the subset of HCWs in the New York Metropolitan area not yet fully vaccinated,41.8%were vaccine unsure,4.5%planned to get vaccinated for the first time soon,1.6%had got their first dose but were not planning to receive the remaining dose,while 52.1%had got their first dose and planned to receive the remaining dose.Within pooled multivariable analysis of the national HCW sample,personnel in nursing/residential facilities were less likely to be fully vaccinated(adjusted OR,AOR 0.79,95%CI 0.63 to 0.98)and more likely to report ever COVID-19 diagnosis(AOR 1.35,95%CI 1.13 to 1.62),than those working in hospitals.Of HCWs not yet vaccinated nationally,vaccine-unsure individuals were more likely to be White and work in pharmacies,whereas vaccine-accepting individuals were more likely to be employed by non-profit organisations and work in ambulatory care facilities.Virtually no HCW was outrightly vaccine-averse,only unsure.Conclusions Differences in vaccination coverage existed by individual HCW characteristics and healthcare operational settings.Targeted efforts are needed to increase vaccination coverage. | Israel T Agaku Alisa Dimaggio Avigal Fishelov Alianne Brathwaite Saief Ahmed Michelle Malinowski Theodore Long | 2022 | Family Medicine and Community Health2022，10，3： | 0 |
| 2 | Ultrafast antiferromagnet rearrangement in Co/IrMn/CoGd trilayers显示文摘Antiferromagnets offer great potential for high-speed data processing applications,as they can expend spintronic devices from a static storage and gigahertz frequency range to the terahertz range.However,their zero net magnetization makes them difficult to manipulate and detect.In recent years,there has been a lot of attention given to the ultrafast manipulation of magnetic order using ultra-short single laser pulses,but it remains unknown whether a similar scenario can be observed in antiferromagnets.In this work,we demonstrate the manipulation of antiferromagnets with a single femtosecond laser pulse in perpendicular exchange-biased Co/Ir Mn/Co Gd trilayers.We study the dual exchange bias interlayer interaction in quasi-static conditions and competition in ultrafast antiferromagnet rearrangement.Our results show that,compared to conventional ferromagnetic/antiferromagnetic systems,the Ir Mn antiferromagnet can be ultrafast and efficiently manipulated by the coupled Co Gd ferrimagnetic layer,which paves the way for potential energy-efficient spintronic devices. | 郭宗夏 Gregory Malinowski Pierre Vallobra 彭懿 许涌 Stéphane Mangin 赵巍胜 Michel Hehn 张博宇 | 2023 | Chinese Physics B2023，32，8： | 0 |
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