Hospital Infection Control Programs

HICP Basics - Germ Warfare HQ

• Aim: Prevent & control HAIs through a structured program.
• Team Structure:
  • HIC Committee (HICC): Multidisciplinary; chaired by institutional head. Sets policies, reviews data.
  • Infection Control Officer (ICO): Trained Microbiologist/Physician. Leads HICP, investigates outbreaks.
  • Infection Control Nurse (ICN): Ratio 1:250 beds (📌 ICN:250). Conducts surveillance, education, audits.
• Key Activities:
  • Surveillance (data collection, analysis, feedback).
  • Adherence to Standard & Transmission-based Precautions.
  • Outbreak investigation & control.
  • Antimicrobial Stewardship Program (ASP).
  • Staff training & environmental hygiene.

⭐ The recommended ratio for Infection Control Nurses (ICNs) is 1 ICN per 250 beds.

Prevention Pillars - Shield Up!

• Hand Hygiene: Cornerstone! 📌 WHO "5 Moments". ABHR (preferred) or soap & water if soiled.

  ⭐ Hand hygiene is the single most effective measure to prevent HAIs. HCW compliance often <50%.

• Standard Precautions (SP): For ALL patients. Incl. hand hygiene, PPE (risk-based), safe injections, cough etiquette.
• Transmission-Based Precautions (TBP): Added to SP for known/suspected infections.
  • Contact: Gown, gloves (MRSA, C. diff).
  • Droplet: Surgical mask (Influenza, Meningococcus). Single room/cohort.
  • Airborne: N95, AIIR (TB, Measles).
• Environmental Disinfection: High-touch surfaces.
• Antimicrobial Stewardship: Optimize use, ↓resistance.
• HCW Vaccination: Hep B, Flu, MMR.
• Biomedical Waste (BMW) Management: Segregate, treat.

Watch & Act - HAI Detectives

• HAI Surveillance: Systematic collection, analysis, interpretation & dissemination of HAI data for action.
  • Types: Active (dedicated staff, higher detection) vs. Passive (routine reporting, underestimation risk).
  • Methods: Lab-based, patient-based (chart review), targeted (e.g., ICU, device-days for VAP, CLABSI, CAUTI).
  • Key Metrics: Incidence density (e.g., infections per 1000 device-days), Standardized Infection Ratio (SIR).
• Outbreak Investigation: A structured approach.
  • Calculate Attack Rates (AR): $\frac{\text{New cases in population}}{\text{Total population at risk}} \times 100$.

![Epidemic curve of a point source outbreak](https://ylbwdadhbcjolwylidja.supabase.co/storage/v1/object/public/notes/L1/Microbiology_Hospital_Acquired_Infections_Hospital_Infection_Control_Programs/e874b142-0457-47c9-a008-c872721e4f1b.gif)

• Key Program Activities:
  • Regular audits (e.g., hand hygiene, bundle compliance) & feedback.
  • Root Cause Analysis (RCA) for significant HAIs/outbreaks.
  • Monitoring antimicrobial resistance patterns (Antibiogram).
• Reporting: Crucial for HICC and public health authorities.

⭐ Sentinel surveillance for specific HAIs (e.g., MRSA, C. difficile) in high-risk units provides critical early warnings.

Clean Sweep & Safe Disposal - Zap & Wrap

Essential for HAI prevention: thorough cleaning, disinfection/sterilization, and strict Biomedical Waste (BMW) management.

• Decontamination Steps:

  • Cleaning: Removes visible soil, organic matter. Prerequisite.
  • Disinfection: Reduces most pathogens (not all spores).
    • High-Level (HLD): e.g., 2% Glutaraldehyde. For semi-critical items (endoscopes).
    • Intermediate-Level (ILD): e.g., Alcohols. For non-critical items with blood.
    • Low-Level (LLD): e.g., Quats. For environmental surfaces.
  • Sterilization: Kills ALL microbial life, including spores.
    • Autoclave: Steam, $121^{\circ}C$, 15 psi, 15-20 min.
    • Ethylene Oxide (ETO): For heat-sensitive items.

• BMW Management (Zap & Wrap): Segregate → Treat (Zap) → Dispose (Wrap) 📌 Yellow Red White Blue: Yucky Rubbish Wants Binning!

  

⭐ BMW Rules 2016: Untreated human anatomical waste, animal waste, soiled waste, and biotechnology/microbiological waste must not be stored beyond 48 hours.

High‑Yield Points - ⚡ Biggest Takeaways

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