Standard prophylaxis refers to patients whose body fluids, blood, excretions, and secretions are determined to be infectious and require isolation. Patients on standard precautions are required to implement bi-directional prophylaxis to prevent two-way transmission of the disease, primarily from the patient to the healthcare worker and the healthcare worker to the patient. Contact, droplet, and airborne isolation measures are established according to the route of transmission, which focuses on hand washing as well as the timing of hand washing, and basic measures such as gloves, goggles, isolation gowns, and protective masks are required when contact with patients is necessary. When contact with secretions may be contaminated, wash your hands quickly with a disinfectant. For more information, consult your doctor.