Answer: All of the above.
Step-by-step explanation:
Wearing of personal protective equipment, such as gowns and gloves is required and necessary for health workers in order to prevent them from having contact with body fluids of patients or prevention of accidents.
Wearing gowns and gloves lead to a safer, and more secure environment. Healthcare workers should wear gowns and gloves when there is a chance of contact with blood and body fluids, when entering the room of a patient who is HIV positive, when she/he has a cold and also when caring for any patient with an upper respiratory tract infection.
Therefore, all the options are correct.