Vaccination is the most common way of controlling an antigenic substance or vaccination that gives insusceptibility against at least one infection.

An occupant specialist is a clinical school graduate and specialist in preparing who is partaking in an alumni clinical training (GME) program.

A clinical understudy is a doctor in preparation who has moved on from clinical school and has a physician certification however.

Analyzing the radon or radon progeny concentrations with passive devices, or the act of calibrating radon or radon progeny measurement devices.