Question: what are the four main universal precautions?
Answer: Hand hygiene1.
Gloves. ■ Wear when touching blood, body fluids, secretions, excretions, mucous membranes, nonintact skin. ... 
Facial protection (eyes, nose, and mouth) ■ ... 
Gown. ■ ... 
Prevention of needle stick and injuries from other.
Respiratory hygiene and cough etiquette.
Environmental cleaning. ■ ... 
Linens.