A blood culture from an Atlanta surgical patient grew methicillin-resistant Staphylococcus aureus on post-operative day three after an elective knee replacement. The hospital’s microbiology lab compared the isolate to recent specimens from the same surgical unit and found a matching strain in three other patients over the prior six weeks. The hospital had not detected the outbreak through its routine surveillance because the cases had been distributed across two surgical services and treated by different physicians. The plaintiff, who developed prosthetic joint infection requiring multiple revision surgeries, alleged that the hospital’s failure to identify and respond to the outbreak, plus specific intraoperative infection control failures, caused the avoidable infection. The case depended on outbreak investigation data the hospital was reluctant to produce and on expert testimony about whether the infection rate at the facility exceeded the rate that would have occurred with adequate infection control.
What hospital-acquired infection cases involve #
Hospitals are full of sick people, immunosuppressed people, catheters, ventilators, and antibiotics; some infections are unavoidable in that environment. The hospital-acquired infection (HAI) category in medical malpractice asks a different question: when does an infection that the patient developed during care reflect a breach of infection control standards rather than the inherent risk of being hospitalized?
The category includes:
Surgical site infections, particularly those involving deep tissues, implants, or unusual organisms suggestive of contamination during the procedure.
Central line-associated bloodstream infections (CLABSI), where infection enters through a central venous catheter. These infections are largely preventable through proper insertion technique, sterile maintenance, and timely removal.
Catheter-associated urinary tract infections (CAUTI), where infection develops in patients with indwelling urinary catheters. Most are preventable through appropriate catheter use and removal.
Ventilator-associated pneumonia (VAP), where infection develops in mechanically ventilated patients. Prevention bundles address oral care, head positioning, and other measures.
Clostridioides difficile infections, often associated with antibiotic exposure that disrupts the normal gut flora. While not always preventable, some infections reflect inappropriate antibiotic use.
Methicillin-resistant Staphylococcus aureus (MRSA) transmissions, including both healthcare-associated MRSA and community-associated strains acquired during hospitalization.
Infection control standards #
Hospital infection control standards are codified through multiple sources: Centers for Disease Control and Prevention guidelines, World Health Organization recommendations, Joint Commission accreditation requirements, and Centers for Medicare and Medicaid Services participation requirements. The standards cover:
| Domain | Standards |
|---|---|
| Hand hygiene | World Health Organization "five moments" framework |
| Personal protective equipment | Standard and transmission-based precautions |
| Environmental cleaning | Frequency and methods for routine and outbreak situations |
| Sterilization | Surgical instrument processing and validation |
| Antimicrobial stewardship | Appropriate antibiotic use to reduce resistance |
| Surveillance | Active monitoring for infection occurrence and trends |
| Outbreak response | Investigation and intervention when cluster cases occur |
The standards establish the framework for infection control practice. Departures from the standards can support negligence theories, though the connection between any specific departure and any specific infection requires careful causation analysis.
Causation in HAI cases #
Causation in HAI cases is often the most difficult element. Many infections in healthcare settings have multiple potential sources, and distinguishing the negligent cause from the inherent risk requires careful analysis.
Several approaches support causation arguments:
Source identification through laboratory methods. Modern microbiology can match strains to specific sources in some cases, identifying outbreak patterns or specific transmission chains. A patient infected with an organism matching strains from other patients on the same unit during the same time period has stronger causation evidence than a patient with a unique strain.
Specific breach identification. A patient who acquired a central line infection where the line was placed without proper sterile technique, or maintained without appropriate care, has a stronger causation case than a patient who acquired the same infection where the line was managed appropriately.
Comparative rates. A facility with significantly elevated infection rates compared to risk-adjusted benchmarks may support the inference that the elevated rates reflect inadequate practice. The argument is more difficult when the specific case occurred at a facility with average or below-average rates.
Temporal patterns. An infection in the immediate post-procedural period, with an organism associated with the operative setting, supports causation more strongly than an infection developing after prolonged hospitalization with multiple potential exposures.
The defense in causation often emphasizes the patient’s vulnerability. A patient with diabetes, immunosuppression, or other risk factors may be argued to have acquired the infection due to those vulnerabilities rather than due to any breach. The eggshell plaintiff doctrine applies (the defendant takes the patient as found), but causation still requires proof that the breach was a substantial factor.
Surgical site infections #
Surgical site infections (SSIs) are among the most litigated HAI categories. The standards for prevention are well-established and include preoperative antibiotic prophylaxis, surgical site preparation, sterile technique during the procedure, environmental controls in the operating room, and proper wound care after the procedure.
Specific breach categories include:
Inadequate or absent antibiotic prophylaxis. The standard generally requires antibiotic administration within one hour before incision, with appropriate redosing for prolonged procedures.
Sterile technique breaches during the procedure. Documented breaks in sterility, contaminated instruments, or improper surgical site preparation can support negligence.
Inadequate operating room environmental controls. Air handling, traffic patterns, and other environmental factors affect infection risk.
Implant-related concerns. Procedures involving implants (joint prostheses, hardware, mesh) have specific infection risks and specific prevention protocols.
The expert testimony in SSI cases typically addresses whether the specific infection control measures used met the standard, and whether identifiable departures from the standard caused the specific infection.
Central line and ventilator-associated infections #
CLABSI and VAP have benefited from substantial quality improvement efforts in recent decades. The infections are largely preventable through implementation of evidence-based prevention bundles.
Central line insertion bundles include hand hygiene before insertion, maximal sterile barrier precautions during insertion, chlorhexidine skin antisepsis, optimal catheter site selection (avoiding the femoral site in adults when possible), and prompt removal of unnecessary lines.
Central line maintenance bundles include daily review of line necessity, proper dressing changes, port disinfection before access, and appropriate line management.
Ventilator-associated pneumonia bundles include elevation of the head of the bed to 30-45 degrees, daily sedation interruption and assessment for extubation readiness, peptic ulcer disease prophylaxis, deep vein thrombosis prophylaxis, and oral care with chlorhexidine.
Documented failures of bundle compliance can support negligence theories. The plaintiff’s case typically involves both expert testimony about the standard and discovery of the actual practice patterns at the facility.
Outbreak investigation and disclosure #
When multiple patients develop similar infections in the same facility within a short time, outbreak investigation procedures should be triggered. The investigation typically involves epidemiologic analysis, laboratory work to characterize the organisms, identification of common exposures, and implementation of control measures.
Outbreak investigations produce information that can be central to HAI cases. The investigation may identify specific transmission patterns, specific provider behaviors, specific equipment problems, or specific facility conditions that contributed to the outbreak.
Discovery of outbreak investigation materials is contested. Some materials may be protected by peer review privilege under O.C.G.A. § 31-7-133, though the privilege has limits in HAI cases. Some materials may be subject to disclosure requirements to public health authorities. The discovery analysis is complex and often produces substantial motion practice.
Damages in HAI cases #
The damages in HAI cases reflect the consequences of the specific infection. Several categories appear:
Additional medical costs for treating the infection. Antibiotic therapy, additional procedures, prolonged hospitalization, and follow-up care add to the costs of the underlying illness.
Functional consequences. Some infections produce permanent functional impairment: loss of a joint or limb from severe infection, permanent organ damage from sepsis, chronic infection requiring ongoing management.
Death. Severe infections can produce death directly or contribute to death from the underlying illness. Wrongful death damages under O.C.G.A. § 51-4-2 apply in these cases.
The damages can be substantial when the infection caused major consequences. A prosthetic joint infection requiring multiple revision surgeries and producing chronic limited function can produce damages running into the millions for the affected patient.
Multi-defendant analysis #
HAI cases often involve multiple potential defendants. The hospital itself, through both vicarious liability and direct corporate negligence theories. The individual providers whose conduct may have contributed to the infection. Equipment manufacturers in cases involving contaminated equipment. Outsourced services in cases involving contracted sterilization or cleaning services.
The pre-filing investigation involves identifying which actors had relevant responsibilities and which conduct contributed to the infection. The affidavits under § 9-11-9.1 must be from experts qualified for each defendant’s specialty.
The framework applies the standard analysis to infection causation #
A hospital-acquired infection case is built from the microbiology lab: the culture report that names the organism, the antibiotic sensitivity panel that fingerprints the resistance pattern, the surveillance data that may or may not show prior cases on the same unit. A blood culture from an Atlanta surgical patient that grew MRSA on post-op day three, matched by the lab to an outbreak strain that had appeared in three other patients on the same unit; a urine culture from a Macon hospitalized patient that grew the same multi-drug-resistant Pseudomonas identified in two other ICU patients the prior week; a C. difficile PCR from a Savannah nursing home patient who had received clindamycin for a dental procedure she did not need: these are the lab reports that bridge the gap between an infection’s existence and a defendant’s negligence. The defense theme of “infections are sometimes unavoidable” survives until the lab data shows a pattern; then it collapses.
This article is for informational purposes only and does not constitute legal advice. Personal injury cases turn on specific facts and applicable law that vary by case. If you have been injured in Georgia and want to understand your legal options, consult a licensed Georgia personal injury attorney.