COVID-19 is a disease-causing severe pneumonia in patients infected by _______________.
The person-to-person transmission routes for COVID-19 of concern in dental practice include all of the following EXCEPT:
Aerosols are defined as liquid or solid particles less than 50 micrometers in diameter. Particles of this size are small enough to stay airborne for an extended period but can only travel limited distances (less than 120 cm).
All of the following are true about splatter droplets, EXCEPT:
The highest levels of aerosol and splatter emission has been shown to occur with the use of _______________.
The reproduction number (R0) describes _______________.
Entry into host cells of coronaviruses is facilitated by the S-protein. In the case of both SARS-CoV-1 and SARS-CoV-2, this entry is through binding to the _______________.
Viral shedding by asymptomatic individuals infected by SARS-COV-2 has been reported during a prodromal period of up to _______________.
SARS-CoV-2 may survive on hard surfaces up to _______________.
Transmission-based Precautions include all of the following categories EXCEPT:
The United States Centers for Disease Control and Prevention (CDC) states that close contact with a patient infected with SARS-CoV-2 conveys significant risk for development of COVID-19. The CDC defines “close contact” as: 1) being within approximately 6 feet (2 meters) of a patient with COVID-19 for a prolonged period of time (≥30 minutes) or 2) having direct contact with infectious secretions from a patient with COVID-19.
The CDC recommends that healthcare workers take precautions to avoid direct contact with infectious secretions from patients who are known or possible cases of COVID-19. All of the following are considered infectious secretions, EXCEPT:
Current CDC guidance suggests that procedures that produce high levels of aerosols, in particular those that demonstrate exposure to infectious secretions or are likely to induce coughing should be avoided, if possible. If such procedures must be performed, the CDC suggests use of an N95 or greater respirator and other PPE, limiting the number of healthcare providers to those that are essential for the procedure, and performance of aerosol-generating procedures in an airborne infection isolation room.
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