An emergency medical technician (EMT), also known as an ambulance technician, is a health professional that provides emergency medical services. EMTs are most commonly found working in ambulances. In English-speaking countries, paramedics are a separate profession that has additional educational requirements, qualifications, and scope of practice. EMTs are often employed by private ambulance services, municipal EMS agencies, governments, hospitals, and fire departments. Some EMTs are paid employees, while others (particularly those in rural areas) are volunteers. EMTs provide medical care under a set of protocols, which are typically written by a physician. Hazard controls EMTs are exposed to a variety of hazards such as lifting patients and equipment, treating those with infectious disease, handling hazardous substances, and transportation via ground or air vehicles. Employers can prevent occupational illness or injury by providing safe patient handling equipment, implementing a training program to educate EMTs on job hazards, and supplying PPE such as respirators, gloves, and isolation gowns when dealing with biological hazards. Infectious disease has become a major concern in light of the COVID-19 pandemic. In response, the U.S. Centers for Disease Control and Prevention and other agencies and organizations have issued guidance regarding workplace hazard controls for COVID-19. Some specific recommendations include modified call queries, symptom screening, universal PPE use, hand hygiene, physical distancing, and stringent disinfection protocols. Research on ambulance ventilation systems found that aerosols often recirculate throughout the compartment, creating a health hazard for EMTs when transporting sick patients capable of airborne transmission. Unidirectional airflow design can better protect workers. Canada There is considerable degree of inter-provincial variation in the Canadian paramedic practice. Although a national consensus (by way of the National Occupational Competency Profile) identifies certain knowledge, skills, and abilities as being most synonymous with a given level of paramedic practice, each province retains ultimate authority in legislating the actual administration and delivery of emergency medical services within its own borders. For this reason, any discussion of paramedic practice in Canada is necessarily broad, and general. Specific regulatory frameworks and questions related to paramedic practices can only definitively be answered by consulting relevant provincial legislation, although provincial paramedic associations may often offer a simpler overview of this topic when it is restricted to a province-by-province basis. In Canada, the levels of paramedic practice as defined by the National Occupational Competency Profile are: emergency medical responder (EMR), primary care paramedic, advanced care paramedic, and critical care paramedic. Regulatory