Nosocomial infections — known internationally as Healthcare-Associated Infections (HAIs) — are infections that a patient acquires during care at a healthcare facility, that were neither present nor incubating at the time of admission. WHO records HAIs as one of the most frequent patient-safety events: 7 in 100 patients in developed-country hospitals, 15 in 100 in developing countries, experience at least one HAI during their stay.
In Indonesia, national-level surveillance is limited, but multicenter studies in Type A and B hospitals typically measure HAI prevalence at 9–15% — depending on the definition and study year. For a 300-bed hospital at 70% BOR, that means ~25 patients are actively infected at any moment. Most are preventable with consistent IPC practice.
This article explains what HAIs are, the main types, why they're hard to fully avoid, and the prevention framework that has been proven to work — with references to more detailed operational guides for each pillar.
Formal definition
WHO defines an HAI as: "An infection occurring in a patient during the process of care in a hospital or other healthcare facility, which was not present or incubating at the time of admission."
In Indonesia, the definition used by Minister of Health Regulation 27/2017 on Infection Prevention and Control (IPC):
"An infection that occurs in a patient while being treated in a Healthcare Facility and shows new infection symptoms, not related to the initial condition on admission."
Operational criterion: symptoms appear ≥48 hours after admission (except for SSI, which can appear up to 30–90 days post-operation).
The five most common HAI types
Nearly 80% of HAI cases fall into these 5 categories. Knowing the type helps focus the prevention strategy.
1. Surgical Site Infection (SSI)
An infection of the surgical wound — superficial (skin/subcutis), deep (muscle/fascia), or organ/space. Onset within 30 days post-operation, or 90 days if there's an implant. Sources: the patient's own flora, instrument contamination, surgical staff, or the OR environment.
Primary prevention: correct surgical hand scrub (see the guide), strict OR disinfection (see the protocol), timely antibiotic prophylaxis, and intra-operative aseptic technique.
2. Catheter-Associated Urinary Tract Infection (CAUTI)
A urinary-tract infection from an indwelling urethral catheter. Risk rises 5–10% per day of catheter use. Common pathogens: E. coli, Klebsiella, Enterococcus, Candida.
Prevention: strict indications (no "for convenience" catheters), aseptic insertion, routine catheter care, remove as soon as possible. Rule of thumb: ask daily, "is the catheter still needed?"
3. Central Line-Associated Bloodstream Infection (CLABSI)
Bloodstream infection from a central venous catheter (CVC). The most fatal — mortality 12–25%. Common pathogens: Staphylococcus aureus, coagulase-negative staphylococci, Candida.
Prevention: the Central Line Bundle — hand hygiene, maximum barrier precautions at insertion, chlorhexidine skin prep, optimal site selection (subclavian > femoral), and daily evaluation of whether the CVC is still needed.
4. Ventilator-Associated Pneumonia (VAP)
Pneumonia that develops ≥48 hours after intubation. ICU patients on mechanical ventilation have an 8–28% risk of VAP. Common pathogens: Pseudomonas aeruginosa, Acinetobacter baumannii, Staphylococcus aureus.
Prevention: the VAP Bundle — head elevation 30–45°, oral care with chlorhexidine (see the chlorhexidine article), peptic ulcer prophylaxis, DVT prophylaxis, and daily sedation interruption.
5. Hospital-Acquired Pneumonia (HAP, non-VAP)
Pneumonia in a non-ventilated patient after ≥48 hours of care. Includes aspiration that often occurs in elderly/post-stroke patients. Prevention: oral hygiene, early mobilization, aspiration management in high-risk patients.
The "ESKAPE" pathogens — the usual suspects
The ESKAPE mnemonic summarizes the 6 most common HAI pathogens, all of which trend toward antibiotic resistance:
- Enterococcus faecium
- Staphylococcus aureus (including MRSA)
- Klebsiella pneumoniae
- Acinetobacter baumannii
- Pseudomonas aeruginosa
- Enterobacter species
Indonesian additions: Candida (especially the emerging C. auris in large hospitals), Clostridioides difficile (post-antibiotic), and Mycobacterium tuberculosis at hospitals with a high TB burden.
Four main transmission routes
HAIs move from one point to another in four ways:
- Contact — direct or indirect. Staff hands, instruments, gloves not changed. This is the dominant route: 80% of HAIs spread via hands.
- Droplet. Respiratory droplets (>5 microns) from a coughing/sneezing patient, reaching 1–2 meters. Influenza, COVID-19, Bordetella pertussis.
- Airborne. Particles ≤5 microns that linger in the air longer. TB, varicella, measles.
- Vehicle. Contaminated water (Legionella), food, adulterated drugs, invasive devices.
That contact is the dominant route explains why hand hygiene is the single most effective IPC intervention. The WHO 5 Moments of Hand Hygiene is the practical framework for breaking the contact route.
Five pillars of HAI prevention
Pillar 1: Hand hygiene
The single most cost-effective intervention. Studies show 70%+ compliance reduces HAIs by 30–50%. The key: the right product (alcohol-based hand rub with emollient), accessibility at every point of care, ongoing training, and independent audits.
Practical details in dedicated articles: 5 Moments that get missed, Hand Rub vs Sanitizer vs Hand Wash, and for surgical staff Surgical Hand Scrub WHO guide.
Compliance drops when staff hands are irritated — so this is also a hand-hygiene product quality issue; see the healthcare worker hand irritation article.
Pillar 2: Environmental disinfection
Contaminated surfaces and equipment are pathogen reservoirs that sustain transmission. Correct disinfection eliminates these reservoirs.
The most often misunderstood: spray-and-wipe without contact time = wasted. See disinfectant contact time. For the OR with the strictest standard: OR disinfection guide. For product selection: 7 criteria for choosing a hospital disinfectant and disinfectant vs antiseptic difference.
Pillar 3: Aseptic technique for invasive procedures
A procedure bundle (an agreed step set) for every invasive intervention:
- Central Line Bundle (5 elements for CLABSI prevention)
- VAP Bundle (5 elements for VAP prevention)
- CAUTI Prevention Bundle
- SSI Prevention Bundle (perioperative)
Bundles must be audited for compliance, not just written down. 90%+ compliance is the commonly-recommended threshold.
Pillar 4: Antibiotic stewardship
Irrational antibiotic use → resistance → harder-to-treat pathogens when an HAI happens. An Antibiotic Stewardship Program (ASP) with a tight formulary, audit-feedback, and an indications committee is now mandatory under KARS accreditation.
Additionally: antibiotic residues from patients ultimately exit through the IPAL — and can drive antibiotic resistance genes in the environment. See the hospital IPAL article.
Pillar 5: Surveillance & audit
What isn't measured can't be improved. Effective HAI surveillance:
- Consistent case definitions (use CDC NHSN or Permenkes 27/2017)
- Daily data from units (CCU, ICU, OR, wards) to the IPC nurse
- Monthly analysis: rate per 1,000 device-days, per-unit trend
- Feedback to the unit with measurable improvement plans
- Data-sharing between hospitals via national surveillance
Without surveillance, "our HAI rate is low" can't be defended in a KARS audit.
WHO Multimodal Improvement Strategy
The WHO framework widely adopted by Indonesian hospitals for IPC implementation — not one intervention but five elements running together:
- System change — infrastructure (product access, layout, supply chain)
- Training and education — ongoing training for staff at every level
- Monitoring and feedback — independent audits + unit feedback
- Reminders and communication — signage, alarms, peer reminders
- Institutional safety climate — a safety culture from the board down
One weak element makes the other four ineffective. The one most often missing: leadership from the board that makes IPC a strategic priority rather than a task for the IPC nurse.
Implementation challenges in Indonesia
Five obstacles that come up most often in audits and conversations with IPC teams:
- Heavy staff workload. Tight nurse-patient ratios push hand-hygiene compliance down. System solution: more dispensers at every point of care, an alcohol-based rub that isn't irritating so staff will actually use it.
- Limited product and training budget. Picking the cheapest product is often counterproductive — see the procurement checklist article.
- Compliance audit bias. Staff change behavior while being audited. Blind audits (by an unidentified observer) are more accurate.
- Rising antibiotic resistance. Empirical regimens that have stopped working. Locally-updated sensitivity data is needed.
- Certification and accreditation perceived as paperwork. If IPC is only "to pass accreditation," then between accreditations there is no consistency.
What Emguard contributes
Emguard positions itself not as a product supplier but as a HAI-prevention partner for hospitals and healthcare facilities:
A full product line for the two main pillars
- Pillar 1 (Hand Hygiene): Hand Rub Antibacterial, Hand Wash Antibacterial, Hand Sanitizer, Hand Scrub Plain, Hand Scrub Floral — pH-balanced, with emollients, designed to support long-term compliance
- Pillar 2 (Surface Disinfection): Hydrogen Peroxide 8% — wide efficacy (bactericidal, virucidal, sporicidal), no corrosive residue, suitable for every hospital zone
Supporting services
- Training for cleaning staff, IPC nurses, and the OR team — free 2× a year for customers
- Compliance documentation: registrations, per-batch CoA, efficacy test reports (see how to verify a medical device license)
- Laminated signage for scrub rooms and cleaning areas
- Audit support during KARS accreditation
Initial consultation at no cost. Reach out via WhatsApp below with: hospital type, bed count, and the area you want to focus on.
Summary
Nosocomial infections aren't random bad luck — most are preventable through consistent implementation of five IPC pillars: hand hygiene, environmental disinfection, aseptic technique, antibiotic stewardship, and surveillance. The WHO Multimodal Strategy provides the proven framework. What separates hospitals with low HAI rates from high ones isn't technology or budget — it's leadership, ongoing training, and independent audits used for improvement, not punishment.
Every article on the Emguard blog covers one operational aspect of this framework in depth. Start wherever is most relevant for your facility — and contact us if you need technical help or an audit of the products already in use.