Infection Control - Understanding Prevention & Healthcare Safety
Healthcare-associated infections (HAIs) continue to be a significant health problem around the world. Infections occur in millions of patients around the world while receiving medical care and lead to longer hospital stays, higher health care costs, disability, and death.
Infection Prevention and Control (IPC) is a collection of evidence-based practices to prevent the spread of infection in healthcare facilities and to ensure the safety of patients, healthcare workers, and visitors. IPC is an integral part of patient safety and quality health care. The measures have a dramatic effect on decreasing these risks and enhancing health outcomes.
Read on to know more about the Infection Prevention and Control Programme.
Importance of Infection Prevention and Control
In healthcare facilities, there are many opportunities for infectious agents to spread. This can occur via patient-to-patient, from the healthcare worker to the patient, and from the patient to the healthcare worker.
This can happen due to the close contact between patients, invasive procedures, and exposure to body fluids. If the patient is not receiving infection control care, they may develop an infection during treatment for another condition.
Research suggests that over three million people die each year due to unsafe health care. Globally, approximately 4% of patients die as a result of unsafe care, with this rate being higher in low and middle-income countries. However, over half of these adverse events can be prevented through the implementation of effective infection prevention and control measures, making the prevention of nosocomial infection a critical priority for healthcare systems worldwide.
Core Principles of Infection Prevention and Control
IPC practices are generally divided into Standard Precautions, which apply to all patients, and Transmission-Based Precautions, which are used for patients with suspected or confirmed infectious diseases:
Standard Precautions
These are basic practices that are recommended for every patient:
1. Hand Hygiene
Hand washing is the most effective and easiest way to prevent the spread of infections. Hand hygiene should be done at 5 critical moments, as recommended by the World Health Organisation (WHO):
- Prior to coming into contact with a patient
- Before performing aseptic procedures
- Once you have been exposed to body fluids
- Following contact with a patient
- Following contact with the patient's environment
2. Personal Protective Equipment (PPE)
Personal Protective Equipment (PPE) is a barrier between health care workers and infectious agents. PPE includes:
- Gloves
- Gowns
- Medical masks
- Respirators
- Face shields
- Protective eyewear
3. Respiratory Hygiene and Cough Etiquette
Respiratory infections are transmitted through droplets produced by infected people when coughing, sneezing, or talking. Respiratory hygiene practices help minimise the spread of these pathogens.
Key measures include:
- Coughing or sneezing into a tissue, or using your elbow to cover your mouth and nose
- Using disposable tissues
- Masks to wear as necessary
- Social distancing from others
- Hand washing after respiratory secretions
4. Safe Injection Practices
Injection drug use can spread serious blood-borne diseases like hepatitis B, hepatitis C and HIV. Safe injection practices consist of:
- Injecting with clean syringes and needles each time
- Avoiding the re-use of any disposable equipment.
- Effective sharps disposal in sharps containers
- This involves following aseptic measures when preparing medicines.
5. Environmental Cleaning and Disinfection
Pathogens can survive on surfaces and medical equipment for a long time. Cleaning and disinfection are thus an important part of IPC. The following are examples of effective environmental control:
- Frequent cleanings of patient care areas
- Cleaning of frequently touched surfaces.
- Correct sterilisation of re-used healthcare equipment
- The proper disposal of healthcare waste.
- Proper cleaning can greatly minimise the risk of spreading infection.
Transmission-Based Precautions
Transmission-Based Precautions are the second tier of infection prevention and control measures used in healthcare settings. They are meant for patients who are known or suspected to be infected with pathogens and need extra precautions to help prevent the spread of infection.
There are three categories of precautions used:
1. Contact Precautions
Infections can be spread through direct contact with a patient or indirectly through contaminated surfaces and equipment. Contact precautions aim to reduce transmission through direct or indirect contact by using appropriate PPE, hand hygiene, patient placement, and dedicated equipment.
Key Measures:
- Keep the patient in one of the rooms, if possible.
- Put on gloves and gown before entering the patient's room.
- Disconnect and dispose of personal protective equipment (PPE) before leaving the room and conduct hand hygiene.
- Restrict patients from leaving the room unless absolutely necessary for medical reasons.
- Try to use special or one-time patient-care equipment, if possible.
- Wash and sanitise the patient's room and any surfaces that are touched often.
2. Droplet Precautions
Droplet Precautions are implemented for infections spread by droplets from the respiratory tract when a person coughs, sneezes or speaks.
Key Measures:
- Use good source control by wearing a mask on the patient.
- Keep the patient in a different room.
- Healthcare workers should wear surgical masks when entering the patient's room.
- Promote good coughing and respiratory hygiene practices.
- Limit patient movement when not necessary for medical reasons.
- Make sure the patient is in a mask when being transported.
3. Airborne Precautions
Airborne precautions are necessary for diseases transmitted by small airborne particles. This is especially important for airborne diseases such as tuberculosis, measles, chickenpox, and disseminated herpes zoster.
Key Measures:
- Place the patient in an Airborne Infection Isolation Room (AIIR).
- When an AIIR is not available, place the patient in a private room, close the door and have the patient wear a mask.
- Healthcare workers must wear a fit-tested N95 respirator or higher-level respiratory protection.
- Minimise patient movement from the room.
- Make sure the patients are wearing a surgical mask when being transported.
- Limit exposure of non-immune health care workers to the extent possible.
- Give post-exposure vaccines for preventable diseases when necessary.
Nosocomial Infections (Healthcare-Associated Infections)
Nosocomial infections, also known as Healthcare-associated infections, are those acquired during medical care in a healthcare institution. These infections do not occur at the time of admission but during or after the delivery of health care. It is generally accepted that HAIs are infections that occur:
- Within 48 hours after hospital admission
- Within 3 days following discharge
- Within 30 days after surgical procedures, depending on the type of infection and surveillance criteria.
Causes of Nosocomial Infections
A number of microorganisms can cause HAI, such as:
Bacteria
Bacteria can cause bloodstream infections, pneumonia, wound infections, and gastrointestinal illnesses. Common bacterial pathogens include:
- Gram-negative bacteria
- Clostridioides difficile (C. difficile)
- Methicillin-resistant Staphylococcus aureus (MRSA)
Viruses
Viruses such as the hepatitis B virus and hepatitis C virus can be transmitted through contaminated needles and blood exposure, or poor infection control measures.
Fungi
Some fungal organisms are capable of producing serious infections, particularly in individuals who are immunodeficient.
Transmission of Nosocomial Infections
There are several ways that HAIs can be transmitted:
- Contact with infected people.
- Contaminated medical equipment
- Sneezes and coughs from the respiratory tract.
- Improper hand hygiene
- Inadequate sterilisation procedures
- Environmental contamination
Risk Factors for Nosocomial Infections
Some patients are at increased risk for HAI. Risk factors include:
- Weakened immune system
- Advanced age
- Chronic illnesses
- Prolonged hospital stay
- Invasive medical procedures
Medical interventions that raise the risk include:
- Urinary catheters
- Mechanical ventilation
- Intravenous injections
- Surgical procedures
Symptoms of Nosocomial Infections
Manifestations depend on the type and site of infection and can include:
- Fever
- Chills
- Cough
- Shortness of breath
- Abdominal pain
- Diarrhea
- Painful urination
- Increased frequency of urination
- Confusion or altered mental status
Treatment of Nosocomial Infections
Treatment will vary based on the causative organism and the location of infection. They include:
- Treatment for bacterial infections (antibiotics).
- Medications used for treating viral infections
- Medications for fungal infections.
Fungal Infections and Infection Control
Fungal infections, also known as mycoses, are diseases caused by fungi such as yeasts and moulds. They can impact skin, nails, oral cavity, lungs, urinary tract, and more. Superficial fungal infections are generally not serious; invasive fungal infections can be fatal, especially for those with impaired immune systems.
Vaginal Yeast Infection
Vaginal yeast infections, also referred to as vaginal candidiasis, are a typical fungal infection in women. This is a problem when the fungus, which is the normal resident of the vagina, grows in excessive numbers.
Symptoms of Vaginal Yeast Infection
Common symptoms include:
- Vaginal itching
- Burning sensation
- Redness and irritation
- Thick vaginal discharge
- Discomfort during urination
Risk Factors of Vaginal Yeast Infection
The risk factors are:
- Pregnancy
- Diabetes
- Antibiotic use
- Immunosuppression
- Hormonal changes
Treatment of Vaginal Yeast Infection
Antifungal medications like these are effective for most cases of vaginal yeast infection:
- Fluconazole
- Miconazole
- Terconazole
How to Prevent Fungal Infections
There are a number of practical steps that can be taken to minimise the risk of fungal infection:
- Shower after exercise/sweating
- Keep skin dry
- Wear clean clothing
- Don't go through a public shower without your shoes on.
- Maintain oral hygiene
- Maintain well-groomed and trimmed nails.
- Don't share items such as eating utensils, cups, towels, or rags.
- Only use antibiotics when prescribed.
- Use protective equipment when handling soil/dust.
Urinary tract infections (UTIs)
A urinary tract infection is an infection affecting any part of the urinary system, including:
- Urethra (urethritis)
- Bladder (cystitis)
- Kidneys (pyelonephritis)
Symptoms of UTIs
Common symptoms include:
- Burning during urination
- Frequent urination
- The need to urinate immediately, but without pain.
- Cloudy urine
- Lower abdominal discomfort
Infections can be severe and lead to:
- Fever
- Chills
- Nausea
- Vomiting
Treatment for UTIs
Antibiotics are used to treat the majority of UTIs. Commonly prescribed antibiotics are:
- Nitrofurantoin
- Amoxicillin
- Cephalexin
- Doxycycline
- Fosfomycin
- Ciprofloxacin
Note: Antibiotic treatment depends on the organism involved, local resistance patterns, patient characteristics, and infection severity. Common first-line options for uncomplicated UTIs may include nitrofurantoin or fosfomycin where appropriate, while other antibiotics are selected based on clinical assessment and culture results.
Urinary Tract Infection Prevention
Preventive measures include:
- Drinking adequate water
- Maintaining proper hygiene
- Sought immediate attention for symptoms
- Carrying out recommended treatment regimens
- Steer clear of unnecessary antibiotics
Role of Healthcare Workers in IPC
Experienced and reliable medical professionals are vital in preventing infections. Their responsibilities include:
- Complying with hand hygiene procedures
- Using PPE appropriately
- Following sterilisation procedures
- Using safe injection practices
- Educating patients & families
- Monitoring infection trends
- Reporting outbreaks promptly
By consistently following IPC protocols, healthcare workers contribute significantly to the prevention of nosocomial infection and the reduction of healthcare-associated infections.
Conclusion
The cornerstone of safe and effective health care is Infection Prevention and Control. Healthcare-associated infections can be minimised in a healthcare facility by adopting standard precautions, including hand hygiene, the use of personal protective equipment, respiratory hygiene, safe injection practices, and environmental cleaning. These measures play a vital role in the prevention of nosocomial infection and help create safer healthcare environments for patients and healthcare workers.
Fungal, nosocomial, and urinary tract infections remain serious threats, especially in susceptible patient groups. Thus, IPC is a crucial component of creating safer health care environments and for the prevention of nosocomial infection.
Reader Information: This article is intended for educational and informational purposes only and should not be considered medical advice, diagnosis, or treatment. Infection prevention and control practices may vary based on individual circumstances, healthcare settings, and local guidelines. Always consult a qualified healthcare professional for medical concerns, diagnosis, treatment decisions, or infection management. In case of a medical emergency, seek immediate medical attention.
FAQ's
1. What are the first signs of infection?
Early symptoms of infection are often mild and may include fever, fatigue, headache, body aches, loss of appetite, feeling unwell, or swollen lymph nodes. This is because they are symptoms of the body's immune system getting ready to attack the infection.
2. What are the 4 types of infection?
Bacterial, viral, fungal and parasitic infections can be the four major types of infections. They are caused by different microorganisms and can cause different effects on the body that need different treatments and prevention.
3. Which tests are conducted to confirm an infection?
CBC and CRP can support the evaluation of infection but cannot confirm it. Confirmation often requires microbiological testing such as cultures, antigen tests, molecular testing, or other pathogen-specific investigations.
4. What are the 4 types of prevention?
There are four categories of prevention, namely, primordial, primary, secondary, and tertiary prevention. They are associated with the prevention of risk factors, the prevention of disease before it occurs, the early diagnosis and treatment of disease, and the minimisation of complications in individuals with a disease.
5. Why is patient safety important in healthcare?
Patient safety is important because about 10% of patients are harmed during healthcare, and over 3 million people die each year from unsafe care. More than half of these harms are preventable, which is why safe healthcare is essential.
