Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The infection risk probability for each susceptible occupant in different cases (Detail results can be found in Appendix B). (For interpretation of the references to color in this figure, the reader is referred to the web version of this article).
