Efficacy of five ‘sporicidal’ surface disinfectants against Clostridioides difficile spores in suspension tests and 4-field tests

Background: A sporicidal surface disinfection is recommended both for the outbreak and the endemic setting but a comparative evaluation on the efficacy of ‘sporicidal’ surface disinfectants using suspension tests and 4-field tests has not been performed. Aim: To determine the efficacy of five ‘sporicidal’ surface disinfectants (three ready-to-use wipes (A, B, E), two concentrates (C, D) based on peroxides or aldehydes against C. difficile spores. Methods: The efficacy was determined under clean conditions using a suspension test and the 4-field test. Each test was performed in duplicate in two separate laboratories. Wipes were wrung to collect the solution for the suspension tests. Results: Product A (peracetic acid; 5 min), product C (peracetic acid; 2% solution in 15 min or 1% solution in 30 min) and product D (peracetic acid; only 2% solution in 15 min) were effective with at least a 4 log10-reduction of C. difficile spores in suspension and on surfaces. Product B (hydrogen peroxide) was not effective in suspension (0.9 log10 after 15 min; 3.2 log10 after 1 h) and on surfaces (2.8 log10 after 15 and 60 min). Product E based on glutaraldehyde, (ethylendioxy)dimethanol and DDAC demonstrated 0.9 log10 after 4 h in suspension and 4.5 log10 after 4 h on surfaces. Conclusions: Not all surface disinfectants with a sporicidal claim were effective against C. difficile spores in standardized suspension tests and in the 4-field test. In clinical practice preference should be given to products that reliably pass the efficacy criteria of both types of tests.Peer Reviewe

Female terminalia morphology and cladistic relations among Tok-Tok beetles (Tenebrionidae: Sepidiini)

Tok-tokkies are one of the most iconic lineages within Tenebrionidae. In addition to containing some of the largest darkling beetles, this tribe is recognized for its remarkable form of sexual communication known as substrate tapping. Nevertheless, the phylogenetic relationships within the group remain poorly understood. This study investigates the usefulness of female terminalia morphology for delimiting Sepidiini and reconstructing relationships among it. Data on the structure of the ovipositors, genital tubes and spicula ventrali have been generated for >200 species representing 28 Pimeliinae tribes. This dataset was used in a comparative analysis at the subfamilial level, which resulted in recognition of several unique features of tok-tokkie terminalia. Additionally, new features linking phenotypically challenging tribes also were recovered (Cryptochilini + Idisiini + Pimeliini).Secondly, 23 characters linked to the structure of female terminalia were defined for tok-tok beetles. Cladistic analysis demonstrates the nonmonophyletic nature of most of the recognized subtribes. The morphological dataset was analysed separately and in combination with available molecular data (CAD, Wg, cox1, cox2, 28S). All obtained topologies were largely congruent, supporting the following changes: Palpomodina Kaminski & Gearner subtr.n. is erected to accommodate the genera Namibomodes and Palpomodes; Argenticrinis and Bombocnodulus are transferred from Hypomelina to Molurina; 153 species and subspecies previously classified within Psammodes are distributed over three separate genera (Mariazofia Kaminski nom.n., Piesomera stat.r., Psammodes sens.n.). Psammodes sklodowskae Kaminski & Gearner sp.n. is described. Preliminary investigation of the ovipositor of Mariazofia basuto (Koch) comb.n. was carried out with the application of microcomputed tomography, illuminating the muscular system as a reliable reference point for recognizing homologous elements in highly modified ovipositors.Funding was provided by the National Science Centre, Poland (OPUS-19 Project 2020/37/B/NZ8/02496) and National Science Foundation (DEB-1754630/2009247)Peer reviewe

Connecting the Laudato Si Action Platform with UD’s Common Good Framework

Pope Francis’ Laudato Si’ - on the Care for our Common Home (LS) is the first extensive Papal document focused on the environment. In May 2021, the Vatican announced a Laudato Si Action Platform (LSAP), a seven-year process calling universities and six other sectors to action on seven LS goals that integrate the UN Sustainable Development Goals. UD was invited to join the international universities network working team. This session is led by students, staff, and faculty members of UD’s LSAP working group. We’ll give an overview of the LSAP vision, elements, and process and its connections with the UD mission, UD\u27s Marianist identity, and the Vatican’s Global Education Compact. We’ll also explore connections the LSAP initiative is creating on campus and with other universities globally. Finally, we’ll explore with you the ways the LSAP can engage all facets of campus life and promote student participation in addressing the urgent climate crisis

Internet Research Annual

Internet Research Annual provides a useful overview of the cutting-edge in Internet studies. Established scholars and new researchers address issues such as communities on/off line, the Internet as a methodological tool and space for research, and the places, politics, and policies of the Internet, creating a volume that comprehensively covers the field of Internet research. Also included are a brief history of the organization, a list of previously published papers from the conferences, and works by several of the keynote speakers including Phil Agre, Barbara Warnick, Bill Dutton, Sheizaf Rafaeli, Susan Herring, Robin Mansell, and much more

Laudato Si, Environmental Justice, and Care for Our Community

Moderator: Sister Leanne Jablonski, University of Dayton Presentations: On Care for Our Common Home: Laudato Si Platform (Rebecca Potter, University of Dayton) Social Ecology and Lawyering in the Anthropocene (Matthew Currie, Advocates for Basic Legal Equality; Kumar Jensen, City of Evanston, Illinois) Dayton Sustainability Plan and Engagement with Climate Justice and Resilience (Margaret A. Maloney, City of Dayton, Ohio) Fratelli Tutti: Pope Francis and the Catholic Response to Human Rights (Tiffany Hunsinger, University of Dayton) Pope Francis, Human Rights, and COVID-19 (John Sniegocki, Xavier University