Final answer:
To help prevent nosocomial infections, visitors to a hospital should wash their hands regularly, as handwashing is a crucial measure to prevent the spread of infections.
Step-by-step explanation:
Visitors to a hospital can help prevent the spread of infection by washing hands regularly. Frequent hand washing is the single most important defense against the spread of pathogens, which can be transmitted through direct skin contact or the fecal-oral route. Proper handwashing techniques are critical for public health and reduce the risk of nosocomial infections. Handwashing can drastically reduce the spread of respiratory illnesses such as flu, coronavirus disease, and the common cold because these viruses can be spread through hand contact with the nose, mouth, or eyes. It is especially important in a clinical setting, where health-care workers must wash their hands thoroughly between every patient contact to prevent contagion.