Hospital-acquired infections (HAIs) are infections that patients can get while receiving treatment in a healthcare facility, such as a hospital. These infections can occur in various parts of the body and are often caused by bacteria, viruses, or fungi that are resistant to antibiotics. Common types of HAIs include surgical site infections, pneumonia, and urinary tract infections. HAIs can result from several factors, including invasive procedures, the use of medical devices, and the spread of germs among patients and healthcare workers. Preventing these infections involves strict hygiene practices, proper sterilization of equipment, and careful monitoring of patients to reduce the risk of transmission.