Infection acquired in hospital

From lighthouse to hothouse: hospital hygiene, antibiotics and the evolution of infectious disease, 1950-1990

Upon entering clinical medicine in the 1940s, antibiotic therapy seemed to complete a transformation of hospitals that originated in the late nineteenth century. Former death sinks had become harbingers of therapeutic progress. Yet this triumph was short-lived. The arrival of pathologies caused by resistant bacteria, and of nosocomial infections whose spread was helped by antibiotic therapies, seemed to be intimately related to modern anti-infective therapy. The place where such problems culminated were hospitals, which increasingly appeared as dangerous environments where attempts to combat infectious diseases had instead created hothouses of disease evolution. This paper will focus on one aspect of that history. It caused clinical medicine and hospital hygiene in particular to pay attention to a dimension of infectious disease it had previously paid little attention to thus far: The evolution of infectious disease-previously a matter of mostly theoretical interest-came to be useful in explaining many phenomena observed. This did not turn hospital hygienists into geneticists, though it did give them an awareness that the evolution of infectious disease in a broad sense was something that did matter to them. The paper advances its argument by looking at three phases: The growing awareness of the hospital as a dangerous environment in the 1950s, comprehensive attempts at improving antibiotic therapy and hospital hygiene that followed from the 1960s and lastly the framing of such challenges as risk factors from the 1970s. In conclusion, I will argue that hospital hygiene, being inspired in particular by epidemiology and risk factor analysis, discussed its own specific version of disease emergence and therefore contributed to the 1980s debates around such topics. Being loosely connected to more specialized studies, it consisted of a re-interpretation of infectious disease centred around the temporality of such phenomena as they were encountered in day-to-day dealings of clinical wards.

Educating the infection control team - past, present and future. A British prespective

This review sets out to explore how education and training provisions for members of the Infection Control Team (ICT) have developed alongside their roles and in response to changes in the British National Health Service. It focuses on the Consultant in Communicable Disease Control, the Infection Control Doctor and the Infection Control Nurse in the United Kingdom, but also briefly considers approaches adopted by other countries. Future developments should include maximizing information technology for delivering teaching materials, shared learning and improvements to pre-registration curricula for both doctors and nurses.

The impact of surveys on hospital infection

The major impact of surveys of hospital infection has been the improvement in the quality of infection control programmes. The earlier surveys became an incentive to others to find out their infection rates and risk factors for infection. Surveys are now more sophisticated in design and the surveillance methods more refined, but they have had little impact on the rates of infection. Without doubt, the greatest improvements have been made by carrying out targeted surveillance with interpretive feedback to clinical staff. This has led to the use of guidelines for good practice and measures of outcome. This strategy has been shown to decrease infection rates, decrease the need for antibiotics therapy, alleviate morbidity and save on hospital costs.

Staphylococcus aureus: a review of the literature

Staphylococcus aureus has a long association with nosocomial infection. Problems date from the 1950s, although methicillin-resistant Staphylococcus aureus (MRSA) did not emerge until the following decade. Initially the pathogenicity of antibiotic-resistant strains was underestimated, and is still sometimes questioned, but today most authorities consider MRSA a serious threat, especially given current preoccupation with cost-effectiveness within the health service: nosocomial infection is associated with increased expenditure and may be regarded as a hallmark of indifferent nursing and medical care. This review documents the emergence of MRSA and recognition of the ensuing problems throughout the 1980s and early 1990s, with suggestions for nursing activities which could contribute towards improved control. Lessons learnt during outbreaks are seen to be of value, but there is also a need for staff at ward level to review routine practice continually so that awareness of activities likely to result in cross-infection is maintained. The use of protective clothing emerges as less important than handwashing, which may be periodically audited to maintain standards.

Nurses' hands as vectors of hospital-acquired infection: a review

Hospital-acquired infections (HAI) are notorious for the manner in which they complicate the course of the original illness, increase costs of hospital stay and delay recovery. This review will briefly outline the problems presented by HAI in developed countries and present evidence that Staphylococcus aureus and gram negative bacilli, the main causative agents, reach susceptible patients via the contact rather than airborne route, predominantly on the hands of hospital staff. Good hand hygiene could help reduce the economic burden and patient distress caused by HAI, but there is evidence that it is infrequently and poorly performed by nurses, the health care staff most frequently in continuous contact with patients. Possible reasons are explored in an attempt to identify strategies to improve hand hygiene.

Hospital infection surveillance in the United Kingdom

Surveillance methods vary in different hospitals, but are mainly based on laboratory reports, as in Sweden. These reports are supplemented by ward visits by the infection control nurse and by the usual epidemiologic methods in the investigation of outbreaks.

An increasing interest in surveillance of hospital infection occurred in the 1950s when outbreaks of staphylococcal infection were causing problems throughout the world. The appointment of an MD as infection control officer in every hospital was suggested in 1955 by Colebrook in the Birmingham Accident Hospital, but no full-time officer has so far been appointed in the United Kingdom (UK). The task was taken on by medical microbiologists, who are usually physicians and, currently in England and Wales, make up 82% of infection control officers.”

In the early days, the recording of the incidence of infection was usually confined to surgical wounds, as in the US. The problem of collecting a large amount of data by the microbiologist was recognized by Moore who appointed the first infection control nurse.” He also described the importance of laboratory reports in the early detection of outbreaks.

Surveillance was a major topic for discussion at the international Conference on Nosocomial Infections in 1970, and Moore suggested that incidence rates were of little value for determining changes in a hospital or for comparisons between hospitals. The number of infections in individual hospitals was too small for statistical comparison, particularly if rates were low and infections influenced bv many factors were not corrected for in the overall rates.

Comparison of surveillance and control activities of infection control nurses and infection control laboratorians in United States hospitals, 1976-1977

To study the impact of the professional background of infection control personnel, we compared the characteristics and activities of 107 infection control nurses (ICNs) with those of 13 infection control laboratorians (ICLs), all in hospitals with 300 beds or more. Although the two groups performed similarly in many respects. ICNs spent more time teaching, whereas ICLs spent more time and appeared more proficient in investigating outbreaks. Staff nurses at hospitals with ICNs found the infection control person more visible on the wards and more available for discussing infection control matters. ICNs appeared less hesitant to speak up to personnel not following correct handwashing techniques. ICNs and ICLs appear to offer different skills that should be considered when filling different infection control positions.

The "hospital epidemiologist" in U.S. hospitals, 1976-1977: a description of the head of the infection surveillance and control program. Report from the SENIC project

As part of the first two phases of the SENIC Project (Study on the Efficacy of Nosocomial Infection Control), information was collected from the heads of the infection surveillance and control programs (ISCPs) in U.S. hospitals. The data were analyzed to describe these respondents and to determine whether differences among them were related to their areas of professional training or to characteristics of the hospitals where they were located. The findings indicate that the ISCP heads constitute a very heterogeneous group, with substantial differences in age, professional training (40% are pathologists), characteristics of their medical practices, memberships in professional organizations related to infection control, time spent in ISCP activities, approach to epidemiologic problems, and opinions on the preventability of nosocomial infections and the seriousness of infection problems in their hospitals. These differences are related strongly to the ISCP heads' professional training, size of hospital, and, to a lesser extent, medical school affiliation, but there is little evidence that the differences are related to regional or urban-rural location or type of ownership of the hospitals. The average ISCP head estimates that about half of all nosocomial infections are preventable, but these estimates vary inversely with tenure in the position and the tendency to approach a clinical problem epidemiologically.

Staphylococcal Infections in the Hospital and Community

Images