Definition: A Healthcare-Associated Infection (HAI), also known as a nosocomial infection, is an infection acquired by a patient during the course of receiving medical care that was not present or incubating at the time of admission. These infections can manifest in various healthcare settings, including hospitals, long-term care facilities, and outpatient clinics.
HAIs encompass a wide range of infections, some of the most common being central line-associated bloodstream infections (CLABSI), catheter-associated urinary tract infections (CAUTI), surgical site infections (SSI), ventilator-associated pneumonia (VAP), and Clostridioides difficile infections (C. diff). They can arise from medical or surgical procedures, the use of medical devices, contaminated environmental surfaces or equipment, or through person-to-person transmission, often facilitated by healthcare workers. The vulnerability of patients, compromised immune systems, and the presence of invasive medical devices significantly increase the risk of acquiring an HAI.
The public health importance of HAIs is substantial, as they contribute to significant patient morbidity and mortality, prolonged hospital stays, and increased healthcare costs globally. Furthermore, HAIs play a critical role in the development and spread of antimicrobial resistance, as many are treated with antibiotics, leading to selective pressure on microorganisms. Effective infection prevention and control (IPC) programs, including hand hygiene, proper sterilization, environmental cleaning, and robust surveillance systems, are paramount in reducing the incidence of HAIs and safeguarding patient safety within the healthcare system.
Key Context:
- Infection Prevention and Control (IPC)
- Antimicrobial Resistance (AMR)
- Patient Safety