Gemini-Mediated Self-Disinfecting Surfaces to Address Contact Transmission of Infectious Diseases

2021 ◽  
Author(s):  
Kollbe Ahn Ando ◽  
Roscoe Lisntadt ◽  
Jinsoo Ahn ◽  
Minju Kim
Keyword(s):  
Infectious Diseases ◽  
Quaternary Ammonium ◽  
Gemini Surfactants ◽  
Antimicrobial Properties ◽  
World Health ◽  
Comparable Efficacy ◽  
Great Promise ◽  
Contact Transmission ◽  
Comparable Activity ◽  
Health Organization

According to both the Center for Disease Control (CDC) and the World Health Organization (WHO), contact-transmission (contact between host tissues and a contaminated surface) is the primary transmission route of infectious diseases worldwide. Usually this is mitigated by adherence to a schedule of repeated regular sanitization, yet this approach is inherently limited by sanitization frequency; conventional disinfectants/methods are only germicidal during the period of application, and surfaces are easily re-contaminated in the interim between cleanings. One solution to this problem is to use agents/coatings that impart self-disinfecting properties onto the existing surfaces such that they display sustained virucidal/antimicrobial properties against pathogens that settle upon them. Quaternary-ammonium organosilicon compounds are ideal candidates to achieve this; cationic surfactants are safe and well-established surface disinfectants while organosilanes are used broadly to form durable coatings with altered surface properties on many different materials. Despite their potential to circumvent disadvantages of traditional disinfection methods, extant commercially available quaternary-ammonium silanes do not display comparable efficacy to standard surface disinfectants, nor have their respective coatings been demonstrated to meet the Environmental Protection Agency’s guidelines for residual/extended efficacy. Inspired by powerful surface activity of double-headed “gemini” surfactants, here we present gemini-diquaternary (GQ) silanes with robust residual germicidal efficacy on various surfaces by incorporating a second cationic “head” to the structure of an conventional mono-quaternary-ammonium silane. Aqueous solutions of GQs were tested in suspension- and surface-antimicrobial assays against an array of pathogens, including Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). GQ performance was benchmarked against the common disinfectants, ethanol, hydrogen peroxide and hypochlorite, as well as against a common antimicrobial mono-quaternary (MQ) silane. Solutions of GQ silanes were efficacious when used for immediate disinfection, showing comparable activity to common disinfectants (>106 fold reduction in 15 seconds). Additionally GQ solutions were demonstrated to impart durable self-disinfecting properties to a variety of porous and nonporous surfaces, efficacious after repeated cycles of abrasion and repeated contaminations, and with superior coating ability and activity (>108 higher activity) than that of the popular MQ silane. GQ solutions as surface treatments show great promise to overcome the limitations of traditional disinfectants in preventing the spread of infectious diseases.

Organization of restrictive quarantine measures to prevent especially dangerous infections

2020 ◽  
pp. 6-11
Author(s):  
Petr Ilyin
Keyword(s):  
Infectious Diseases ◽  
Clinical Symptoms ◽  
International Health ◽  
World Health ◽  
The World ◽  
History Of ◽  
Entire History ◽  
Health Organization ◽  
Former Ussr ◽  
Health Regulations

Especially dangerous infections (EDIs) belong to the conditionally labelled group of infectious diseases that pose an exceptional epidemic threat. They are highly contagious, rapidly spreading and capable of affecting wide sections of the population in the shortest possible time, they are characterized by the severity of clinical symptoms and high mortality rates. At the present stage, the term "especially dangerous infections" is used only in the territory of the countries of the former USSR, all over the world this concept is defined as "infectious diseases that pose an extreme threat to public health on an international scale." Over the entire history of human development, more people have died as a result of epidemics and pandemics than in all wars combined. The list of especially dangerous infections and measures to prevent their spread were fixed in the International Health Regulations (IHR), adopted at the 22nd session of the WHO's World Health Assembly on July 26, 1969. In 1970, at the 23rd session of the WHO's Assembly, typhus and relapsing fever were excluded from the list of quarantine infections. As amended in 1981, the list included only three diseases represented by plague, cholera and anthrax. However, now annual additions of new infections endemic to different parts of the earth to this list take place. To date, the World Health Organization (WHO) has already included more than 100 diseases in the list of especially dangerous infections.

Drinking-Water Quality and Intestinal Infectious Diseases in a Colombian Department, 2010-2016

2020 ◽  
pp. 21-29
Author(s):  
Dora Cardona Rivas ◽  
Militza Yulain Cardona Guzmán ◽  
Olga Lucía Ocampo López
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Infectious Diseases ◽  
Disease Burden ◽  
Social Protection ◽  
Drinking Water Quality ◽  
World Health ◽  
The Social ◽  
Etiological Agents ◽  
Health Organization

Objective: To characterize the burden of intestinal infectious diseases attributable to drinking-water quality in 27 municipalities in the central region of Colombia. Materials and methods: A time-trend ecological study. The drinking-water quality of the National Institute of Health and the Institute of Hydrology, Meteorology and Environmental Studies was identified. The disease burden was calculated based on the mortality registered in the National Department of Statistics and the records of morbidity attended by the Social Protection Integrated Information System. The etiological agents reported in morbidity records and the observation of environmental conditions in the municipalities of the study were included. The disease burden was determined according to the methodology recommended by the World Health Organization (WHO).

scholarly journals Emerging zoonoses in Indonesia: implication for the future

2020 ◽  
Vol 39 (3) ◽  
pp. 151
Author(s):  
Toni Wandra
Keyword(s):  
Infectious Diseases ◽  
World Health Organization ◽  
Emerging Infectious Diseases ◽  
Zoonotic Diseases ◽  
World Health ◽  
Emerging Zoonoses ◽  
The Future ◽  
Health Organization

World Health Organization (WHO) defines zoonotic diseases (zoonoses) as those diseases and infections which are naturally transmitted between vertebrate animals and humans. More than 250 zoonoses have been described, over 60% of pathogens that cause diseases in humans are zoonoses of animals, and 75% of emerging infectious diseases. Most pandemics are caused by zoonoses.

scholarly journals O Ensino da Antibioterapia: Estado da arte

2019 ◽  
Vol 20 ◽  
pp. 632-637
Author(s):  
Maria José Saavedraa ◽  
João Carlos Sousa
Keyword(s):  
Infectious Diseases ◽  
Large Scale ◽  
Action Plan ◽  
Antimicrobial Properties ◽  
Hospital Setting ◽  
Multidrug Resistant ◽  
World Health ◽  
Novel Approach ◽  
Paul Ehrlich ◽  
Alexander Fleming

Resumo A elevada mortalidade pelas doenças infecciosas, sobretudo epidémicas, mobilizou os cientistas na pesquisa de compostos naturais e produtos de síntese química dotados de propriedades antimicrobianas. Fazendo um pouco de história, referimos Paul Ehrlich, que utilizou o primeiro agente quimioterapêutico -Salvarsan, mais tarde Gerhard Domagk, que utilizou um pro-fármaco percursor de uma sulfamida. Em 1928, Alexander Fleming, descobriu de forma “casual” a penicilina, o primeiro antibiótico. Posteriormente em 1941 Howard Florey e Ernest Chain isolam e purificam a penicilina o que permitiu a sua utilização em larga escala -Era dos Antibióticos. A utilização dos antibióticos (AB) no tratamento das doenças infecciosas constituiu um dos maiores avanços da Medicina no séc. XX. No entanto a sua utilização em larga escala promoveu o aumento da incidência de estirpes multiresistentes aos AB, sobretudo em ambiente hospitalar. Adicionalmente verifica-se uma ocorrência cada vez mais elevada de estirpes resistentes na comunidade–humanos, animais e ambiente. O conhecimento dos mecanismos de ação e da ineficácia dos diferentes grupos farmacológicos de antibióticos é vital para o desenvolvimento de futuros microbianos, estando a ser estudados microrganismos do solo com a finalidade de encontrara novos fármacos. De realçar que a OMS preconiza que caminhamos rumo a uma "era pós-antibiótico”. Se não houver um plano de ação global para o "uso racional de antibióticos" a OMS prevê que em 2050 a resistência aos antibióticos, poderá matar mais de 10 milhões de pessoas.Palavras-chave: antibioterapia; resistência; antibióticos Abstract The current research on infectious diseases, especially with epidemic potential, has mobilized the scientific community to research on the natural substance and chemical probing products with antimicrobial properties. In a brief history of antibiotics, we refer to Paul Ehrlich, who used the first chemotherapeutic agent - Salvarsan, later Gerhard Domagk, who used a sulfamide precursor prodrug. In 1928 Alexander Fleming "casually" discovered penicillin, the first antibiotic. Later in 1941 Howard Florey and Ernest Chain isolate and purify penicillin that can be used on a large scale - Antibiotics Era. The use of antibiotics (AB) in the treatment of infectious diseases is one of the greatest advances of medicine in the 19th century. However, its large-scale use has increased the incidence of multidrug-resistant processes in AB, especially in a hospital setting. Besides, there is an increasing occurrence of resistant strains in different communities - humans, animals and in the environment. Understand the mechanisms of action and the ineffectiveness of the diverse pharmacological groups of antibiotics is crucial to provide further new antibiotic therapies in the near future. Recent studies have highlighted the soil-derived microorganisms as a novel approach to identify new drug substances. In this context, it is noteworthy that the World Health Organization (WHO) considers that we are moving towards a “post-antibiotic era”. If there is no global action plan for “rational use of antibiotics” WHO predicts that in 2050 the global impacts of antibiotic resistance on human heath will be catastrophic, killing more than 10 million people worldwide. Keywords: antibiotic therapy; resistence; antibiotics

scholarly journals A Facile Colorimetric Method For Ultra-Rapid And Sensitive Detection of Copper Ions In Water

2021 ◽  
Author(s):  
Lei Chen ◽  
Yan Li ◽  
Ping Sun ◽  
Hualin Chen ◽  
He Li ◽  
...  
Keyword(s):  
Color Change ◽  
Copper Ions ◽  
Colorimetric Method ◽  
Ethanol Solution ◽  
Sensitive Detection ◽  
World Health ◽  
Great Promise ◽  
Experimental Conditions ◽  
Interesting Phenomenon ◽  
Health Organization

Abstract It is of great meaning to develop a facile, reliable and sensitive method to detect copper ions in water. In the study, a facile method has been developed for rapid and sensitive detection of Cu2+. An interesting phenomenon has been observed that 3,3',5,5'-tetramethylbenzidine (TMB) ethanol solution can be extremely fast passed from colorless to yellow once Cu2+ ions are added. It easily occurs to us that Cu2+ can be quantitatively determined via the absorbance at 904 nm of the color changed TMB solution. More importantly, some specific anions (Cl- , Br- ) can significantly enhance the absorption intensity. Under the optimized experimental conditions, this method exhibits a good linear response range for Cu2+ from 0.5 to 100 μM, with the detection limit of 93 nM. Moreover, the possible detection principle has been explored. It is worth mentioning that the color change can be clearly observed by naked eyes for the detection of 1 μM Cu2+, which is far below the threshold limit of Cu2+ in drinking water suggested by World Health Organization. It means that this method possess great promise for on-site Cu2+ detection.

scholarly journals SARS: Political Pathology of the First Post-Westphalian Pathogen

2003 ◽  
Vol 31 (4) ◽  
pp. 485-505 ◽  
Author(s):  
David P. Fidler
Keyword(s):  
Infectious Disease ◽  
Infectious Diseases ◽  
The United States ◽  
First Century ◽  
World Health ◽  
Health Security ◽  
The World ◽  
Twenty First Century ◽  
The Stability ◽  
Health Organization

In March 2003, the world discovered, again, that I humanity's battle with infectious diseases continues. The twenty-first century began with infectious diseases, especially HIV/AIDS, being discussed as threats to human rights, economic development, and national security. Bioterrorism in the United States in October 2001 increased concerns about pathogenic microbes. The global outbreak of severe acute respiratory syndrome (SARS) in the spring of 2003 kept the global infectious disease challenge at the forefront of world news for weeks. At its May 2003 annual meeting, the World Health organization (WHO) asserted that SARS is “the first severe infectious disease to emerge in the twenty-first century” and “poses a serious threat to global health security, the livelihood of populations, the functioning of health systems, and the stability and growth of economies.”

School Nurses on the Front Lines of Healthcare: Infectious Diseases Popularized in the News

2020 ◽  
Vol 35 (4) ◽  
pp. 212-216
Author(s):  
Lauren McNickle ◽  
Robert P. Olympia
Keyword(s):  
Infectious Diseases ◽  
School Nurses ◽  
World Health ◽  
Initial Assessment ◽  
Health Organizations ◽  
Public Health Organizations ◽  
The World ◽  
Control And Prevention ◽  
Life Threatening ◽  
Health Organization

School nurses may deal with students presenting with symptoms associated with infections popularized in the news. Although rare, the implications of missing or misdiagnosing these infections are potentially life-threatening and devastating. We present three students presenting with febrile illnesses associated with neurologic symptoms, a rash, and fatigue, focusing on the initial assessment and management of these students and their associated “hot topic” infection. The authors also discuss two public health organizations, Centers for Disease Control and Prevention (https://www.cdc.gov/) and the World Health Organization (https://www.who.int/), online references for the school nurse to research both emerging and common infectious diseases.

scholarly journals National Institute for the Infectious Diseases “L. Spallanzani” IRCCS. Recommendations for COVID-19 Clinical Management

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Emanuele Nicastri ◽  
Nicola Petrosillo ◽  
Tommaso Ascoli Bartoli ◽  
Luciana Lepore ◽  
Annalisa Mondi ◽  
...  
Keyword(s):  
Infectious Diseases ◽  
World Health ◽  
Expert Opinions ◽  
Respiratory Involvement ◽  
Health Authorities ◽  
Global Pandemic ◽  
The World ◽  
Novel Coronavirus ◽  
Health Organization ◽  
Affected Country

On January 9th, 2020, the “World Health Organization” (WHO) declared the identification, by Chinese Health authorities, of a novel coronavirus, further classified as SARS-CoV-2 responsible of a diseases (COVID-19) ranging from asymptomatic cases to severe respiratory involvement. On March 9th, 2020, WHO declared COVID-19 a global pandemic. Italy is the second most affected country by COVID-19 infection after China. The “L. Spallanzani” National Institute for the Infectious Diseases, IRCCS has been the first Italian hospital to admit and manage patients affected by COVID-19. Hereby, we show our recommendations for the management of COVID-19 patients, based on very limited clinical evidences; these recomendations should be considered as expert opinions, which may be modified according to newly produced literature data. *for the INMI COVID-19 Treatment Group – ICOTREG Abdeddaim A, Agrati C, Albarello F, Antinori A, Ascoli Bartoli T, Baldini F, Bellagamba R, Bevilacqua N, Bibas M, Biava G, Boumis E, Busso D, Camici M, Capobianchi MR, Capone A, Caravella I, Cataldo A, Cerilli S, Chinello G, Cicalini S, Corpolongo A, Cristofaro M, D’Abramo A, Dantimi C, De Angelis G, De Palo MG, D’Offizi G, De Zottis F, Di Lorenzo R, Di Stefano F, Fusetti M, Galati V, Gagliardini R, Garotto G, Gebremeskel Tekle Saba, Giancola ML, Giansante F, Girardi E, Goletti D, Granata G, Greci MC, Grilli E, Grisetti S, Gualano G, Iacomi F, Iannicelli G, Ippolito G, Lepore L, Libertone R, Lionetti R, Liuzzi G, Loiacono L, Macchione M,  Marchioni L, Mariano A, Marini MC, Maritti M, Mastrobattista A, Mazzotta V, Mencarini P, Migliorisi-Ramazzini P, Mondi A, Montalbano M, Mosti S, Murachelli S, Musso M, Nicastri E, Noto P, Oliva A, Palazzolo C, Palmieri F, Pareo C, Petrone A, Pianura E, Pinnetti C, Pontarelli A, Puro V, Rianda A, Rosati S, Sampaolesi A, Santagata C, Scarcia D’Aprano S, Scarabello A, Schininà V, Scorzolini L, Stazi GV, Taibi C, Taglietti F, Tonnarini R, Topino S, Vergori A, Vincenzi L, Visco-Comandini U, Vittozzi P, Zaccarelli M, Zaccaro G.

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