Hand hygiene in health care: 20 years of ongoing advances and perspectives.

Health-care-associated infections are the most prevalent adverse events of hospital care, posing a substantial threat to patient safety and burden on society. Hand hygiene with alcohol-based hand rub is the most effective preventive strategy to reduce health-care-associated infections. Over the past two decades, various interventions have been introduced and studied to improve hand hygiene compliance among health-care workers. The global implementation of the WHO multimodal hand hygiene improvement strategy and constant efforts to replace the use of soap and water with alcohol-based hand rub have led to a faster and more efficient hand cleaning method. These strategies have strongly contributed to the success of behaviour change and a subsequent decrease in health-care-associated infections and cross-transmission of multidrug-resistant organisms worldwide. The WHO multimodal behaviour change strategy requires a series of elements including system change as a prerequisite for behaviour, change, education, monitoring and performance feedback, reminders in the workplace, and an institutional safety climate. Successful adoption of the promotion strategy requires adaptation to available resources and sociocultural contexts. This Review focuses on the major advances and challenges in hand hygiene research and practices in the past 20 years and sets out various ways forward for improving this lifesaving action.

Hand hygiene in hospitals: anatomy of a revolution.

Healthcare-associated infections (HAIs) affect hundreds of millions of individuals worldwide. Performing hand hygiene is widely accepted as a key strategy of infection prevention and control (IPC) to prevent HAIs, as healthcare workers' contaminated hands are the vehicle most often implicated in the cross-transmission of pathogens in health care. Over the last 20 years, a paradigm shift has occurred in hand hygiene: the change from handwashing with soap and water to using alcohol-based hand rubs. In order to put this revolution into context and understand how such a change was able to be implemented across so many different cultures and geographic regions, it is useful to understand how the idea of hygiene in general, and hand hygiene specifically, developed. This paper aims to examine how ideas about hygiene and hand hygiene evolved from ancient to modern times, from a ubiquitous but local set of ideas to a global phenomenon. It reviews historical landmarks from the first known documented recipe for soap by the Babylon civilization to the discovery of chlorine, and significant contributions by pioneers such as Antoine Germain Labarraque, Alexander Gordon, Oliver Wendell Holmes, Ignaz Philip Semmelweis, Louis Pasteur and Joseph Lister. It recalls that handwashing with soap and water appeared in guidelines to prevent HAIs in the 1980s; describes why alcohol-based hand rub replaced this as the central tool for action within a multi-modal improvement strategy; and looks at how the World Health Organization and other committed stakeholders, governments and dedicated IPC staff are championing hand hygiene globally.

[Semmelweis - a contemplating human. Scientific historical lessons]. / Semmelweis ­ egy gondolkodó ember. Tudománytörténeti tanulságok.

In this article we examine why Semmelweis's seemingly simple, logical and practical discovery was categorically dismissed by the majority of his contemporaries, and why even many years after his death it was accepted with such reservation. We invoke wherever possible Semmelweis's own words citing from the series of articles appearing in the 'Orvosi Hetilap' [Hungarian Medical Weekly Journal] published in 1858 in Hungary, and also from the German language summary of the Journal published in 1860. We came to the conclusion that although Semmelweis did everything in his power to show the causal relationship between the development of puerperal fever (childbed fever) and some infectious substance on the hands of examining doctors and medical students, this was not convincing enough. The predominant theory at the time held that infection was caused by miasma transmitted in the air and therefore stubbornly precluded any notion of infectious matter physically transmitted on unclean hands. We also concluded that the causal sequence observed by Semmelweis was missing an essential empirical element: visual proof of the infectious agent he correctly postulated as physically transmitted. Visually demonstrating the presence of the infectious agent by means of a microscope would have made his case. This finally did occur but only two years after Semmelweis's death. Had the renowned Hungarian obstetrician realized the significance of taking advantage of the opportunity afforded by Dávid Gruby who was conducting experiments in the same town, a more convincing argument could have been made for his theory. In the 1840s and 1850s, Dávid Gruby was experimenting with various microscopic techniques and their application with success in Vienna before continuing his work in France. Gruby's work, especially that of microscopic observations of tissues, received international acceptance. Therefore, the involvement of Gruby and his work with microscopes to support Semmelweis's observations would most probably have forestalled much of the criticism and rejection his theory was initially awarded (among which perhaps Virchow's rejection proved the most damaging). Had Semmelweis utilized microscopic techniques, he would have been celebrated among the first to discover bacterial pathogens, contributing to the development of the currently predominant germ theory. Failure to utilize the microscope was the root cause leading to the tragedy of Semmelweis's rejection by the medical establishment of the time. Despite the increasing numbers of scientists utilizing the microscope at the University of Pest, offered to corroborate his daims with microscopic observations. Efforts have been made have since been to rehabilitate him as the key figure who not only discovered the method of transmission of infectious disease, but also implemented measures of prevention. Elevating him among the ranks of the ten greatest doctors who ever lived is certainly recognition due, but sadly denied to him in his lifetime. Orv Hetil. 2018; 159(26): 1055-1064.

What happened at Vienna's Allgemeines Krankenhaus after Semmelweis's contract as Assistant in the First Maternity Division was terminated?

Ignác Fülöp Semmelweis is famous for dramatically reducing puerperal mortality while he was an Assistant in Vienna's largest hospital, the Allgemeines Krankenhaus; he did this, mainly, by requiring medical personnel to disinfect their hands by washing in a chlorine solution. But Semmelweis was soon removed from his post as assistant. The conventional view, which is suggested by Semmelweis's own account, is that his contemporaries were skeptical of his results, that he was marginalized and that once he was no longer directly responsible for caring for maternity patients, puerperal mortality returned to its former high levels. In fact, the situation appears to have been quite different. In this paper, we calculate and discuss the number of deaths at the Allgemeines maternity clinic after Semmelweis was removed from his position. As we will see, his successors maintained a relatively low mortality rate roughly consistent with the rate Semmelweis himself achieved. This suggests that the chlorine washings were probably still used conscientiously after he left and that the opposition he encountered had other sources than doubts about the effectiveness of the chlorine washings.

[Hand hygiene--part of patient safety from Semmelweis to the present]. / Käsihygienia--potilasturvallisuutta Semmelweisista tähän päivään.

Hand disinfection is one of the most important part of patient safety. By adequate hand disinfection healthcare workers can prevent about 40 per cent of healthcare-associated infections and about 50 per cent of patients' MRSA contaminations in hospitals. Adherence to hand disinfection has been observed in an average of 40 per cent of patient contacts. One of the risk factors leading to poor adherence is the "doctor" status of a healthcare worker. Introduction of an alcohol-based hand rub close to the patient is one of the most significant factors for improved hand hygiene.

[The simple measure of handwashing to prevent the risk from biological agents: what has changed since the theories of Semmelweis]. / La semplice misura del lavaggio delle mani per la prevenzione del rischio da agenti biologici: cosa è cambiato dalle teorie di Semmelweis.

In this manuscript, we consider the importance of hand hygiene as the chief measure of prevention and protection in the occupational context. In particular, we remember the physician who lived in the middle of the 19th century, Ignazio Semmelweis, genius but not understood creator of the theory for infection control, based on hand hygiene. Subsequent studies have clearly demonstrated the validity of Semmelweis' research, through scientific publications and the establishment of international guidelines, such as by the World Health Organization (WHO). It is important to remember the initial work and then, sharpen this tool, resulting in the adoption of simple, but effective behavioural practices, that should be spread by several means and tools of information, education and communication, addressed at all involved, for the reduction of exposure to the occupational biological risk.