All the following are true about nosocomial infections except-
**Core Concept**
Nosocomial infections, also known as hospital-acquired infections (HAIs), are infections that patients acquire during the course of receiving treatment for other conditions in a healthcare facility. These infections can be caused by a variety of pathogens, including bacteria, viruses, and fungi, and can be spread through various routes, including contact with contaminated surfaces, medical devices, and healthcare workers.
**Why the Correct Answer is Right**
Nosocomial infections are a significant concern in healthcare settings due to their potential to cause morbidity, mortality, and increased healthcare costs. The Centers for Disease Control and Prevention (CDC) and the World Health Organization (WHO) have established guidelines for preventing and controlling nosocomial infections. These guidelines emphasize the importance of infection control practices, such as hand hygiene, proper use of personal protective equipment (PPE), and proper cleaning and disinfection of surfaces and medical devices.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because nosocomial infections are not limited to patients with compromised immune systems. Any patient can acquire a nosocomial infection, regardless of their underlying health status.
**Option B:** This option is incorrect because nosocomial infections can be caused by a variety of pathogens, including bacteria, viruses, and fungi. While antibiotic-resistant bacteria are a concern, they are not the only cause of nosocomial infections.
**Option C:** This option is incorrect because nosocomial infections can occur in any healthcare setting, including hospitals, clinics, and long-term care facilities.
**Clinical Pearl / High-Yield Fact**
One key point to remember is that nosocomial infections can be prevented through adherence to infection control practices, such as hand hygiene and proper use of PPE. Healthcare workers play a critical role in preventing the spread of nosocomial infections.
**Correct Answer: D.**