Healthcare-Associated Infections (HAIs): Types, Sources, and Prevention

"Stat infection" is informal jargon for a healthcare-associated infection (HAI) acquired during hospitalization or medical care. The term derives from "statim" (immediately), reflecting the urgency often attached to these infections.

Major Categories

1. Device-associated: CAUTI (catheter-associated UTI), CLABSI (central line–associated bloodstream infection), VAP (ventilator-associated pneumonia).
2. Surgical site infections (SSI): Superficial, deep, or organ/space.
3. Procedure-related: Post-procedural infections from endoscopy, injections, etc.
4. Transmission-based: Contact (MDROs, C. difficile), droplet, airborne.

Common Pathogens

• Staphylococcus aureus (including MRSA)
• Enterococcus spp. (VRE)
• Gram-negative bacilli (E. coli, Klebsiella, Pseudomonas, Acinetobacter)
• Clostridioides difficile
• Candida spp.

Prevention Bundles

• Hand hygiene (WHO 5 Moments).
• Chlorhexidine skin prep, maximal barrier precautions for central lines.
• Catheter necessity review daily; early removal.
• Antimicrobial stewardship.
• Environmental cleaning, UV disinfection.
• Surveillance & feedback (NHSN reporting).

Impact

• ~1 in 31 U.S. hospital patients has an HAI on any given day.
• Increased mortality, length of stay, cost ($28–45 billion annually).
• Public reporting and value-based purchasing tie reimbursement to HAI rates.

Rigorous, multidisciplinary infection control programs are essential.