Table 6. Model From Wuhan, China.

Phase 1	An early phase of the epidemic when few prevention and control measures were implemented. R0 was 3.1.
Phase 2	Public transportation to and from Wuhan, as well as public transportation within Wuhan, were stopped. While gathering events inside Wuhan was banned, quarantine and isolation were gradually established in Wuhan. Rt was 2.6.
Phase 3	New infectious disease hospitals and mobile cabin hospitals came into service, and many medical and public health teams from other provinces and cities in China arrived in Wuhan. The quarantine and isolation at the community level were further enhanced. Rt decreased to 1.9.
Phase 4	The peak of public health restrictions in Wuhan, China. Rt became 0.9.

R₀: metric in epidemiology used to describe the transmissibility of infectious agents; R_t: reproduction number at a particular point of time.