Fig. 3.

United States reproduction number.

Notes: The model-implied ${\mathcal{R}}_t$ for the United States dropped below 1.0 from May 30 ($t=95$) through June 3 ($t=99$), reflecting a short-lived decline in the number of infected cases. But from June 4 onward, the model-implied ${\mathcal{R}}_t$ for the United States has remained above 1.0, reflecting an upward trend in the number of infected cases.