According to the World Health Organization (WHO), infection prevention and control (IPC) is a scientific approach and practical solution designed to prevent harm caused by infection to patients and health workers. It is a subset of epidemiology, but also serves an essential function in infectious diseases, social sciences and global health[1]. Show
Effective IPC is a public health issue that is fundamental in patient safety and health system strengthening. The prevention of healthcare-associated infections (HAI), epidemics (including the 2013-2016 Ebola virus disease outbreak), and pandemics of international concern (For Example; 2009 flu pandemic and the coronavirus disease 2019) are rooted in effective IPC measures[2]. A guiding principle on WHO's Core Components of IPC is that "access to health care services designed and managed to minimise the risks of avoidable HAI for patients and health care workers is a basic human right"[2]. Strengthening global IPC is essential to combat HAI, antimicrobial resistance, and to respond to disease outbreaks. A study published in 2021 looked at the WHO's Core Components of IPC and found that most participating countries have IPC programmes and guidelines in place, however few have set aside the necessary resources to support the programmes. There is a need to move from the planning stage into the implementation and monitoring stages, particularly in low-income countries[3]. The Spread of Infectious Disease[edit | edit source]An infection is defined as the successful transmission of pathogenic microorganisms, such as bacteria, viruses, parasites or fungi that are spread:[4][5][6][7]
In humans, infections occur when an infectious microorganism enters the body, multiplies, and leads to a reaction in the body and potential infectious disease. The spread of infectious disease requires three variables, known as the epidemiological triad[8]:
[9] Infection Spread in Healthcare[edit | edit source]Healthcare facilities, whether hospitals or primary care clinics are an area with an elevated risk of disease transmission due to the presence and relative ratio of susceptible individuals. One in ten patients get an infection whilst receiving care[10] yet effective infection prevention and control reduces healthcare-associated infections by at least 30%[10]. In a healthcare setting, the three components required for infection spread are the following[11]:
Controlling Infectious Diseases Within Communities[edit | edit source]Infection control and prevention is a global issue and there are many protocols and guidelines that can be followed to minimise the spread of infection between people, within a population and globally[2]. Identifying at-risk groups such as children, older people and those with chronic conditions can also help guide relevant strategies to protect these vulnerable groups. The first step when looking at infection control can start at the community level by changing behaviour, including:
As well as simple steps to prevent and control infections, there are biochemical interventions that can be implemented to speed up the recovery process and in some cases prevent viral infections completely.[12] The development of antibiotics, antivirals and vaccinations have been shown to speed up recovery, slow down the progression and in some cases eradicate infectious diseases from entire populations. Antibiotics are prescribed for bacterial infections and support the body's natural defence system to eliminate the disease-causing bacterial agent. They are designed to either kill bacteria or stop them from reproducing. However, poor use of antibiotics, over-prescribing and the mutation of bacteria has led the development of resistant bacteria[13]. In these cases, either stronger doses are required or the combination of one or more antibiotics. Vaccinations are designed to improve immunity to a particular disease. Vaccines work by introducing small amounts of the disease-causing virus or bacteria into the host, allowing them to build up natural immunity. The introduction of regular vaccines have slowed down and in some cases eradicated certain diseases such as polio, measles, mumps, whooping cough and rubeola (measles). There are also vaccinations for chickenpox, but this is not given routinely and is reserved for those at risk of spreading the disease to those with a weakened immune system[14]. This is due to the fact that it is prevalent in children under 10 years of age and symptoms are usually mild; this method allows them to build up natural immunity and contributes to improving the immunisation of a community[15]. This type of protection is known as herd immunity[16]. Antibiotics provide no defence for infectious diseases that are caused by viral agents such as influenza, HIV, herpes, and hepatitis B. In these cases, antiviral medications are the most effective at slowing down the progression of the disease and boosting the immune system. Unfortunately, as with antibiotics, viruses can mutate over time and become resistant to these antiviral drugs[13]. Infection Control in Healthcare Facilities[edit | edit source]Another important factor in controlling and preventing infection is by improving practices in healthcare facilities. It is the duty of healthcare professionals worldwide to ensure they develop strategies and implement policies that protect those who may be immunocompromised in order to keep susceptible patients safe from healthcare-associated infections (HAIs). Globally, up to 7% of patients in developed and 10% in developing countries will acquire at least one HAI[2][17]. HAIs are one of the most common detrimental effects in care delivery and both the endemic burden and the occurrence of epidemics are a major public health concern. HAIs have a significant impact on morbidity, mortality[18] and quality of life and present an economic burden at the societal level. However, a large proportion of HAI are preventable and there is a growing body of evidence to help raise awareness of the global burden of harm caused by these infections, including strategies to reduce their spread[11]. [19] Steps to Improve Infection Control[edit | edit source]There are two tiers of recommended precautions by the Center of Disease Control and Prevention (CDC)[20] to prevent the spread of infections in healthcare settings: (1) Standard Precautions and (2) Transmission-Based Precautions[21][6]. Standard Precautions for All Patient Care:[edit | edit source]
Transmission-Based Precautions[edit | edit source]Transmission-Based Precautions[27] used in addition to Standard Precautions for patients with infectious disease to prevent transmission:
[28] Further details and guidelines for transmission-based and isolation precautions are provided by the Centers for Disease Control and Prevention (CDC): Infection Control Programmes in Acute Care[edit | edit source]The CDC[29] suggest that the assessment and management of infection control programmes and practices in acute care hospital can be divided into 4 sections:
Environmental Cleaning and Disinfection[edit | edit source]Evidence supports the important role of environmental cleaning in controlling the transmission of organisms (e.g.Staphylococcus Aureus, Vancomycin-resistant Enterococci, Norovirus, Clostridium Difficile and Acinetobacter), especially in hospitals and healthcare settings.[30] If an individual with a suspected or confirmed case of infectious disease has attended your clinic, all surfaces that the person has come into contact with must be cleaned.
Infection Control Programmes Globally[edit | edit source]The WHO Guidelines[2] on the Core Components of IPC Programmes at the national and facility level aim to enhance the capacity of countries to develop and implement effective technical and behaviour modifying interventions. They form a key part of WHO strategies to prevent current and future threats from infectious diseases such as Ebola, strengthen health service resilience, help combat antimicrobial resistance (AMR) and improve the overall quality of health care delivery. They are also intended to support countries in the development of their own national protocols for IPC and AMR action plans and to support health care facilities as they develop or strengthen their own approaches to IPC. [32] The "Executive Summary of the Minimum Requirements by Core Component" provides a good summary to present and promote the minimum requirements for IPC programmes at the national and health care facility level, identified by expert consensus according to available evidence and in the context of the WHO core components. Infection Control in Disaster and Conflict Settings[edit | edit source]The principles of IPC remain of paramount importance in emergency settings in order to protect yourself and your patients. This is especially important given the unsanitary conditions post-disaster and conflict in camps, which can create a perfect storm for infection, both for infectious diseases and wound infection. With a high incidence of complex, open traumatic injuries requiring surgery performed in sub-optimal surgical environments, there comes an increased risk of wound infection, which is further exacerbated by limited access to resources including clear (potable) water and medical consumables, creating significant challenges for rehabilitation professionals in many disaster and conflict settings.[33] When working in an area where infectious diseases (e.g. cholera, diphtheria, Ebola, Middle East Respiratory Syndrome (MERS)) are an identified risk, additional IPC precautions will be in place. Make sure that you have had specific training and have been provided with additional PPE as required.[33] Another important factor to consider in the control of infectious diseases is to address and improve social determinants of health within societies. There is a direct link between a person's health and their environment. WHO has identified three "common interventions" for improving health conditions worldwide[34]:
There is no one solution to controlling the spread of infectious diseases, and effective IPC indeed requires government intervention and collaboration between healthcare agencies, individuals and communities. Until certain risk factors are addressed and behaviours modified, the war against infectious diseases will continue to be a predominant and costly health issue around the world. What are the 3 methods of infection control?Hand hygiene. Use of personal protective equipment (e.g., gloves, masks, eyewear). Respiratory hygiene / cough etiquette.
How many steps are in infection control?The six links include: the infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host.
What is the first step in infection control?The first step in infection control is hand hygiene.
What are the 5 pillars of infection control?The five pillars. Hand hygiene. Nearly every American now knows they should wash their hands for 20 seconds to ensure they are properly disinfected. ... . Standard processes for people and protocols. ... . New ways to measure surfaces. ... . New technologies, innovations and solutions. ... . Exploring emerging solutions.. |