Table 2.
Parameters values used in the risk calculations.
| Parameter | Value |
|---|---|
| Prevalence of asymptomatic cases in the communitya | 1.40 % |
| Transmission rate from asymptomatic cases in the community(20, 50) | 4.11 % |
| Transmission rate from symptomatic cases in the community (20, 50) | 6.30 % |
| Transmission rate from symptomatic cases in healthcare settings without PPE(20, 29, 31−33) | 2.83 % |
| Transmission rate from symptomatic cases in healthcare settings with PPE(20, 29, 31−33) | 0.061 % |
| Transmission rate from asymptomatic cases in healthcare settings with PPE (24, 26−28)(20, 50) | 0.0398 % |
| Proportion of infections acquired from symptomatic cases becomes symptomatic(20, 50) | 85 % |
| Proportion of infections acquired from asymptomatic cases becomes symptomatic(20, 50) | 50 % |
| Infection fatality rate (global, includes asymptomatic) (53) | 1.04 % |
| Infection fatality rate (US, symptomatic only) (48) | 1.30 % |
a
unpublished data from University of Rochester Medical Center in Rochester, New York.