Trichomoniasis is not a nosocomial infection.

procedures of case containment of nosocomial infection

Nosocomial infections are hospital-acquired. The most likely sources of nosocomial urinary tract infections are: indwelling and intermittent catheters.

There is no particular amount of Nosocomial infections unless you are asking about the most common. Nosocomial is the technical term for any infection that has been acquired while being hospitalized. The most common type of Nosocomial infection is the one acquired in the urinary tract.

They are the leading cause of primary infections originating in hospitals (nosocomial infections) in the United States.